[google-appengine] delete Master/Slave application after migration without deleting data

[c h]

So i finally finished my migration to HIgh Replication, and i want to 
delete my old app so that i don't have to pay for it.  I disabled billing, 
but faster that you can say "i don't want this anymore" i have a payment 
due and can't delete the app.  the payment due is for storage of data that 
i just copied to HRD, and obviously don't need - i also don't want to pay 
hundreds to run the bulk delete tool.  Is there anything i can do, or 
should i just let the app languish with an ever-increasing balance due?

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[google-appengine] Re: changes does not reflect

[Vik]

Hello

I updated the problem with more analysis at
http://stackoverflow.com/questions/12103783/issues-in-version-uploaded-on-google-app-engine


Thankx and Regards

Vik
Founder
http://www.sakshum.org
http://blog.sakshum.org


On Thu, Aug 23, 2012 at 9:15 PM, Vik  wrote:

> We have a GAE for java app using gwt
>
> I can run the app and test it locally all works good. But on deployoment i
> do not see the changes. i tried clearing browser cache , different
> browsers, private mode but no luck.
> I can verify in the versions that the deployment did happen properly.
>
> Any idea on how to debug what is the issue
>
> Thankx and Regards
>
> Vik
> Founder
> http://www.sakshum.org
> http://blog.sakshum.org
>

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[google-appengine] When moving between HTTP and HTTPS, how to share authentication cookies (ACSID, SACSID)?

[Ben Alpert]

I'm attempting to set up my app so that certain pages can be served over HTTPS 
but most are served over HTTP:

If I log in to my app with a Google account over HTTPS, then the SACSID cookie 
gets set which causes App Engine to happily return the proper account when 
users.get_current_user() is called.

Unfortunately, when I return to the HTTP version of my site, App Engine seems 
to look for the ACSID cookie instead, which isn't present, so 
users.get_current_user() returns nothing.

Is there a way I can configure App Engine to honor the SACSID cookie over HTTP 
or some way to transfer the cookie between the two? (The cookies don't use the 
same value; simply copying the cookie appears not to work.)

Thanks,

Ben

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[google-appengine] changes does not reflect

[Vik]

We have a GAE for java app using gwt

I can run the app and test it locally all works good. But on deployoment i
do not see the changes. i tried clearing browser cache , different
browsers, private mode but no luck.
I can verify in the versions that the deployment did happen properly.

Any idea on how to debug what is the issue

Thankx and Regards

Vik
Founder
http://www.sakshum.org
http://blog.sakshum.org

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[google-appengine] Re: Anyone else having difficulty deploying to GAE in the last two days?

[Akos Polster]

Deployment timed out twice yesterday for me. Today it seems to be back to 
normal

 ~ Akos.

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[google-appengine] Re: Java instance startup time out of control

[Benjamin Possolo]

I posted a blog entry about improving startup times when using JPA.

http://bpossolo.blogspot.com/2012/08/reducing-google-app-engine-cold-start.html

Quick summary of my results:
Dev Mode on local machine: went from 16 second startup time to 2 seconds
Production GAE: went from 50+ second startup time to 7-8 seconds

My application uses GWT, JPA and several other small libraries that do not 
impact startup time.
I have about 29 entity classes and I wire up all my components manually in 
a context listener.
ABout 98% of my entire startup time is attributed to creating the EMF which 
I use to perform some initialization logic.

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[google-appengine] Response time increased significantly

[Armen Danielyan]

For the last several days the response time of my website hosted on 
GAE/Java increased significantly. When I click on any link on my website I 
have to wait for about 10-15 seconds before the page starts loading. Here 
is the log example:

2012-08-23 10:09:36.198 / 200 *10483ms *17kb Mozilla/5.0 (Windows NT 5.1; 
rv:6.0.2) Gecko/20100101 Firefox/6.0.2
220.181.51.83 - - [23/Aug/2012:07:09:36 -0700] "GET / HTTP/1.1" 200 17531 - 
"Mozilla/5.0 (Windows NT 5.1; rv:6.0.2) Gecko/20100101 Firefox/6.0.2" "
www.mena-partnership.info" ms=10484 cpu_ms=2567 cpm_usd=0.001959 
instance=00c61b117c55ea5eaf7a7d348404385246cb8dbd


The billing is enabled, and currently there are 4 instances running (1 
resident and 3 dynamic). In the application settings the Idle Instances 
parameter is set to (1 - 5). I also switched to F2 Frontend Instance Class. 
However I haven't noticed any change in response time. Occasionally the 
response time becomes relatively short (1-2 seconds), but it happens very 
rarely.

I am wondering if anybody else has experienced similar problems and what 
the possible solution is.

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[google-appengine] static file suddently not working

[phoebus]

I maintain a website: www.moveasy.uk.com which is hosted.
Until yesterday the website was working fine.
Today, without changing anything, the logo is not loading! The rest of the 
static files are...
What's going on? I need help!!

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[google-appengine] Response time increased significantly

[Armen Danielyan]

In the last several days the response time of my website increased 
significantly. When I click on any internal link on my website I have to 
wait for about 10-15 seconds before the page starts loading. Here is the 
log example:

2012-08-23 10:09:36.198 / 200 *10483ms *17kb Mozilla/5.0 (Windows NT 5.1; 
rv:6.0.2) Gecko/20100101 Firefox/6.0.2
220.181.51.83 - - [23/Aug/2012:07:09:36 -0700] "GET / HTTP/1.1" 200 17531 - 
"Mozilla/5.0 (Windows NT 5.1; rv:6.0.2) Gecko/20100101 Firefox/6.0.2" "
www.mena-partnership.info" ms=10484 cpu_ms=2567 cpm_usd=0.001959 
instance=00c61b117c55ea5eaf7a7d348404385246cb8dbd


The billing is enabled, and there are 4 instances running (1 resident and 3 
dynamic). In the application settings the Idle Instances parameter is set 
to (1-5). I also switched to F2 Frontend Instance Class. However I haven't 
noticed any change in response time. Occasionally the response time becomes 
relatively short (1-2 seconds), but it happens very rarely.

I am wondering if anybody else has experienced similar problems and what 
the possible solution is.

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[google-appengine] Re: Maximum number of versions problem

[Jon Stevens]

Please star a couple of issues:

http://code.google.com/p/googleappengine/issues/detail?id=2723 (only 2 
years old!?!)
and for good measure:
http://code.google.com/p/googleappengine/issues/detail?id=6803

jon

On Wednesday, August 22, 2012 7:15:10 PM UTC-7, Pavanosa wrote:
>
> It seems there only allow 10 different version store on Google application 
> Server.
>
> what to do if I need automatically delete oldest version by command 
> instead of manually delete on console page?
>
> thx...
>

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Re: [google-appengine] Weird Instance Scheduler

[Takashi Matsuo]

Hi Mos,

On Thu, Aug 23, 2012 at 4:58 AM, Mos  wrote:

> Does anybody else experience abnormal behavior of the instance-scheduler
> the last three weeks (the last 7 days it got even worse)?  (Java / HRD)
> Or does anybody has profound knowledge about it?
>
> Background:  My application is unchanged for weeks, configuration not
> changed and application's traffic is constant.
> Traffic: One request per minute from Pingdom and around 200 additional
> pageviews the day (== around 1500 pageviews the day). The peek is not more
> then 3-4 request per minute.
>

A possible explanation could be that the traffic pattern had changed.


>
> It's very obvious that one instance should be enough for my application.
> And that was almost the case the last months!
>

Actually it's not true. In particular, check this log:
https://appengine.google.com/logs?app_id=s~krisen-talk&version_id=1-0.360912144269287698&severity_level_override=1&severity_level=3&tz=Europe%2FBerlin&filter=&filter_type=regex&date_type=datetime&date=2012-08-23&time=23%3A57%3A00&limit=20&view=Search

You can see the iPhone client repeatedly requests your dynamic resources in
a very short amount of time. Presumably it's due to some kind of 'prefetch'
feature of that device. Are you aware of those accesses, and that this
access pattern can cause a new instance starting?

I don't think this is the only reason, but this can explain that some
portion of your loading requests are expected behavior.

Now I'd like to ask you some questions.


* What is the purpose of max-pending-latency = 14.9 setting?
* Can you try automatic-automatic for idle instances setting?
* What is the purpose of those pingdom check? What happens if you stop that?


>
> But now GAE creates most of the time 3 instances, whereby on has a long
> life-time for days and the other ones are restarted around
> 10 to 30 times the day.
> Because load request takes between 30s to 40s  and requests are waiting
> for loading instances, there are many request that
> fail  (Users and Pingdom agree: *A request that takes more then a couple
> of seconds is a failed request!*)
>
> Please check the attached screenshots that show the behavior!
>
> Note:
> - Killing instances manually did not help
> - Idle Instances were ( Automatic – 2 ) .  Changing it to whatever didn't
> not change anything; e.g. like ( Automatic – 4 )
>
> Thanks and Cheers
> Mos
>
>
>
>
>
>
>  --
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>



-- 
Takashi Matsuo | Developers Advocate | tmat...@google.com

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[google-appengine] HRD Migration & Blob keys

[Phil McDonnell]

I'm looking at migrating to HRD and I use the blob store.  In my datastore
I have one Kind of entity that stores a blob key as one of the fields in
the Entity. I see that the HRD migration warns about blob keys stored in
"serialized form." Pardon my ignorance, but are my blob keys that I
mentioned stored in serialized form? Quotation from the documentation &
example of my blob key in the Entity (highlighted yellow) below.

Thanks,
Phil

*Warning from the HRD Migration:*

If your application has blob data in Blobstore, you need to migrate that
blob data as well. Check the checkbox labeled *Migrate Blobstore Data*. The
blobs will be copied and given new blob keys in the new application, and
the Datastore will be updated with the new blob keys. (However, any blob
keys stored in serialized form within the Datastore will *not* be migrated;
see Migrating Serialized Blob
Keys,
below, for more information.)

*Example of my datastore from the datastore viewer:*
ID/NamecompletecouponKeydatedealIDdealVariantfraudulentnumSoldppemailprice
purchasesolduidverifiedaddress1address2charitycityfullnamestatezipid=174125
True
AMIfv95dj6WTPGjP8P38yQrSmjbPs6eqWCFpvafA0Y9KoROcostO8OiHMWOwZKFfqmNwfi2s9pXyK7Bz8cOIG-CSPnv-T9r0ac9Fn_c5carOHrpRBxFz-Pm3zcI4j93-MDHssxDpC6PdnKY5P3Dr66BrGLHWqoBNzQ
View 
blob
2012-01-23 05:19:04.658000asdf0False1asdf@asdf.com4.0FalseTrue10709668True


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[google-appengine] Creating a game on app engine - calculating costs, thoughts?

[Mark]

Hi,

I'm trying to see if it's feasible to write a game using app engine as the 
backend.

The task I'm most worried about is the discoverability of games. A user can 
create a new game (which creates a Game object in the datastore). Then 
other users can hit an endpoint to get a listing of open games, sorted by 
creation date.

Creating a new game will be a very low frequency operation, so no worries 
there. Users polling for new open games will be much higher in frequency 
though. Each time a user requests a listing of games, I need to go fetch a 
page of Game objects from the datastore. Let's say a page size = 20. And 
the Game object looks like this:

class Game {
String name;
long timestampCreated;
long timestampStarted;
String mapName;
String hostUsername;
int numPlayersMax;
List playerNames; // usernames of other players currently 
joined
Text gameState; // game state as serialized json string
}

the query would be something like:

select Games where timestampStarted = 0 
and playerNames.size() < numPlayersMax 
order by timestampCreated DESC limit 20;

First, I'm hoping it's possible to avoid loading the Text field in this 
listings query since it's not needed for rendering yet. Still there would 
be a fair number of fields to fetch and deserialize, and I'm afraid my 
costs would quickly make it impractical.

I could try keeping a list of open games in memcache, but not sure if I 
could achieve consistency between the memcache state and the datastore 
state of games. Will be looking into that.

I've got a very similar game to this already published, using a single 
jetty instance + mysql on one machine. It's starting to get too much 
traffic  now, and scaling would be a pain. App engine's scalability looks 
great for something like this, but not sure if the # of writes and 
inefficient reads I need to perform are a good idea.

Any general thoughts on this would be greatly appreciated. I'm starting to 
dig into this now and any thoughts on how you'd implement the above would 
be great. In my already-published game (mentioned above), I ran a dark test 
where I'd call through to a (quickly implemented) mirror of the game 
running on app engine. It quickly ate through the daily quota!

Thanks

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[google-appengine] Re: Weird Instance Scheduler

[Mos]

I fill a production issue for this. If anybody has similar problems or is
interested in it please star it:

http://code.google.com/p/googleappengine/issues/detail?id=8004


On Wed, Aug 22, 2012 at 9:58 PM, Mos  wrote:

> Does anybody else experience abnormal behavior of the instance-scheduler
> the last three weeks (the last 7 days it got even worse)?  (Java / HRD)
> Or does anybody has profound knowledge about it?
>
> Background:  My application is unchanged for weeks, configuration not
> changed and application's traffic is constant.
> Traffic: One request per minute from Pingdom and around 200 additional
> pageviews the day (== around 1500 pageviews the day). The peek is not more
> then 3-4 request per minute.
>
> It's very obvious that one instance should be enough for my application.
> And that was almost the case the last months!
>
> But now GAE creates most of the time 3 instances, whereby on has a long
> life-time for days and the other ones are restarted around
> 10 to 30 times the day.
> Because load request takes between 30s to 40s  and requests are waiting
> for loading instances, there are many request that
> fail  (Users and Pingdom agree: *A request that takes more then a couple
> of seconds is a failed request!*)
>
> Please check the attached screenshots that show the behavior!
>
> Note:
> - Killing instances manually did not help
> - Idle Instances were ( Automatic – 2 ) .  Changing it to whatever didn't
> not change anything; e.g. like ( Automatic – 4 )
>
> Thanks and Cheers
> Mos
>
>
>
>
>
>
>

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[google-appengine] Mail API question: Email message is sent to sender too. Are there any way to prevent this?

[Hideki (Wyse)]

Hi,

My application uses Mail Service through Java API, and the app sends an 
email from login user. Email is successfully sent to recipients. However 
the email is also sent to the sender's account. Are there any way to 
prevent sending the mail to the sender?

Thanks,
Hideki

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[google-appengine] Queries hitting deadline

[Phil McDonnell]

In some initialization work my app needs to run through the all of the
datastore entities of a given kind.  I have a lot of these entities (80k
currently) and it's increasing rapidly. I'm currently trying to read these
in using a single datastore query, but running up against the default
datastore timeout of 30 seconds.

Is there a good practice for sharding this or otherwise breaking this up so
that I won't hit these deadlines? I was thinking I would do a keyOnly query
and then break up the keys into a number of reasonably sized sub-queries,
but perhaps there is a better approach out there?

Thanks,
Phil

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[google-appengine] Re: Don't forget - Tonight! We've got a free talk on the Google App-Engine!

[Theo]

Join us at 18.15 for a 18.30 start prompt!

On Thursday, August 23, 2012 4:07:01 PM UTC+1, Theo wrote:
>
> Tonight at Skills Matter, London, we have a very exciting talk by Johan 
> Euphrosine joining us from Zurich. 
>
> Learn how to optimize your app to increase your reliability, increase your 
> performance, and reduce your costs. 
> Plus learn how to use GO with Google App Engine and pose your questions to 
> a leading google developer in the App Engine team. 
>
> All this for free, tonight :-)
>
> What: Google App Engine Talk
> When: Tonight! (August 23rd)
> Where: Skills Matter eXchange
> Learn more and sign up for free! http://bit.ly/O8RGJu
>

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[google-appengine] Don't forget - Tonight! We've got a free talk on the Google App-Engine!

[Theo]

Tonight at Skills Matter, London, we have a very exciting talk by Johan 
Euphrosine joining us from Zurich. 

Learn how to optimize your app to increase your reliability, increase your 
performance, and reduce your costs. 
Plus learn how to use GO with Google App Engine and pose your questions to 
a leading google developer in the App Engine team. 

All this for free, tonight :-)

What: Google App Engine Talk
When: Tonight! (August 23rd)
Where: Skills Matter eXchange
Learn more and sign up for free! http://bit.ly/O8RGJu

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[google-appengine] Re: Anyone else having difficulty deploying to GAE in the last two days?

[Carl Schroeder]

I had the same issue deploying a Java project yesterday.

On Wednesday, August 22, 2012 3:35:26 PM UTC-7, Waleed wrote:
>
> Usually when I deploy to GAE (using appcfg.py) it takes less than a 
> minute. Occasionally, it might takes a couple of minutes. But in the last 
> two days, it's been consistently taking 5 to 10 minutes each time! I'm 
> deploying to our dev app, which has very little traffic. Sometimes it even 
> fails after 10 minutes of waiting. Anyone else getting this?
>
>
> . initial uploading steps go fast ...
> 03:26 PM Compilation completed.
> 03:26 PM Starting deployment.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 1 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 2 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 4 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 8 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 16 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 32 seconds.
> 03:27 PM Checking if deployment succeeded.
> 03:27 PM Will check again in 60 seconds.
> 03:28 PM Checking if deployment succeeded.
> 03:28 PM Will check again in 60 seconds.
> 03:29 PM Checking if deployment succeeded.
> 03:29 PM Will check again in 60 seconds.
>  and it keeps repeating the last two lines for 10 minutes or more
>
>

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[google-appengine] Sudden slowdown of files API

[tempy]

Hi all,

Although I'm not sure if the two are connected, after updating to the
1.7 SDK, blobstore writes using the Files API have become very slow on
finalization, frequently failing completely with an IOException when
the blobs get to around 2 megabytes. These requests fail after running
for 30 seconds. I've filed a production issue here:
http://code.google.com/p/googleappengine/issues/detail?id=7992

I wonder if anyone else has seen such a slowdown.

Also - this leads me to a question about the File API in general. I
know Google doesn't comment on feature timing issues, but just in case
anyone has any insight... is it a bad idea to rely on the File API?
Its been experimental for such a long time that I'm worried that it
will eventually be eliminated, just because it hasn't been promoted
already. Its also the weakest link in my app - it produces a lot of
random errors, more than any other piece of GAE.

If relying on the Files API is a bad idea, how would you guys
accomplish the following: I'm using GAE as a sync-backend for a mobile
app. The mobile app receives deltas from the GAE app, and these deltas
are pre-generated. Generating them on demand could possibly take too
long, thus the offline pre-generation. The deltas could be larger than
the datastore entity-size limit, which is why I'm storing them as
blobs - and then serving them to the app when they're needed. So, if
not for the Files API, how would you guys store these deltas? I really
hope to avoid the complication of using an additional system that's
external to GAE, especially when the blobstore+Files API seem so
perfectly suited to the task.

Thanks,
Mike

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[google-appengine] Maximum number of versions problem

[Pavanosa]

It seems there only allow 10 different version store on Google application 
Server.

what to do if I need automatically delete oldest version by command instead 
of manually delete on console page?

thx...

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[google-appengine] FREE TALK - Google App Engine & GO! Skills Matter, tonight!

[Theo]

Tonight at Skills Matter, London, we have a very exciting talk by Johan 
Euphrosine joining us from Zurich. 

Learn how to optimize your app to increase your reliability, increase your 
performance, and reduce your costs. Plus, pose your questions to a leading 
google developer in the App Engine team. 

All this for free, tonight :-)

What: Google App Engine Talk
When: Tonight! (August 23rd)
Where: Skills Matter eXchange
Learn more and sign up for free! http://bit.ly/O8RGJu

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[google-appengine] Re: Anyone else having difficulty deploying to GAE in the last two days?

[Rafael Sanches]

datastore seems to be incredibly slow in the past two days. Anyone else? do 
you know if there was a change and if I need to do something about it?

On Wednesday, August 22, 2012 3:35:26 PM UTC-7, Waleed wrote:
>
> Usually when I deploy to GAE (using appcfg.py) it takes less than a 
> minute. Occasionally, it might takes a couple of minutes. But in the last 
> two days, it's been consistently taking 5 to 10 minutes each time! I'm 
> deploying to our dev app, which has very little traffic. Sometimes it even 
> fails after 10 minutes of waiting. Anyone else getting this?
>
>
> . initial uploading steps go fast ...
> 03:26 PM Compilation completed.
> 03:26 PM Starting deployment.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 1 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 2 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 4 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 8 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 16 seconds.
> 03:26 PM Checking if deployment succeeded.
> 03:26 PM Will check again in 32 seconds.
> 03:27 PM Checking if deployment succeeded.
> 03:27 PM Will check again in 60 seconds.
> 03:28 PM Checking if deployment succeeded.
> 03:28 PM Will check again in 60 seconds.
> 03:29 PM Checking if deployment succeeded.
> 03:29 PM Will check again in 60 seconds.
>  and it keeps repeating the last two lines for 10 minutes or more
>
>

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[google-appengine] Re: libgmp bug?

[Anand Mistry]

Hi,

Yes, this was caused by the 1.7.1 roll out. What's happening is that you're 
specifying the pycrypto version in your app.yaml as 'latest' instead of a 
specific version. In 1.7.1, we added pycrypto 2.6 to the python27 runtime 
and which is what all applications that specify 'latest' are now using. The 
error message is a bit misleading. Your code will continue to work as-is, 
so there is nothing you have to change. Also, you should only see this 
message on the first request to an instance.

We will look into fixing this issue.

On Thursday, 23 August 2012 08:30:48 UTC+10, Richie Foreman wrote:
>
> +1 I am also seeing this in my environment as well. 
>
>
>
> On Tuesday, 21 August 2012 10:05:54 UTC-7, c h  wrote: 
> > using python27 this started showing in my error logs today: 
> > 
> > 
> > 2012-08-21 
> 08:22:06.683/base/python27_runtime/python27_lib/versions/third_party/pycrypto-2.6/Crypto/Util/number.py:57:
>  
> PowmInsecureWarning: Not using mpz_powm_sec.  You should rebuild using 
> libgmp >= 5 to avoid timing attack vulnerability.E2012-08-21 08:22:06.683 
>  _warn("Not using mpz_powm_sec.  You should rebuild using libgmp >= 5 to 
> avoid timing attack vulnerability.", PowmInsecureWarning) 
> > 
> > 
> > i have not changed app versions in about a week.  was this caused by a 
> system upgrade?  the error message makes me think it's something that 
> should be fixed? 
> > 
> > 
> > thanks, 
> > 
> > 
> > christian 
>

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