I mentioned that those urls do not fail in my Firefox instance, or in the 
internal browser in Eclipse, and the Maven build from the command line is fine. 
 These are all on the same box, so it seems unlikely that an antivirus app or a 
firewall is causing this.

From: [email protected] [mailto:[email protected]] On 
Behalf Of Matthew Piggott
Sent: Monday, August 27, 2012 2:52 PM
To: Maven Integration for Eclipse users mailing list
Subject: Re: [m2e-users] New checkout of working project has m2e persistently 
complaining about missing artifacts that aren't missing

I would suggest checking your Anti-Virus, in p2 people have run into issues 
where the AV (most if not all reports have been AVG I believe) is causing 
timeouts.
On 27 August 2012 17:41, Igor Fedorenko 
<[email protected]<mailto:[email protected]>> wrote:
"connection timed out" usually means networking related problems. Are
you sure windows firewall is not playing tricks on you?

--
Regards,
Igor


On 12-08-27 5:18 PM, KARR, DAVID wrote:
I've been working on a Maven project with my Eclipse running on a Linux box.  
Today I tried getting my Win7 environment up to date.  I have the latest 3.x 
version of Eclipse on both boxes.  When I checked out my working project from 
SVN on the Win7 box, I had a bunch of errors like this:

-----------------
ArtifactDescriptorException: Failed to read artifact descriptor for 
org.springframework:spring-webmvc-portlet:jar:3.0.6.RELEASE: 
ArtifactResolutionException: Failure to transfer 
org.springframework:spring-webmvc-portlet:pom:3.0.6.RELEASE from 
http://repo.maven.apache.org/maven2 was cached in the local repository, 
resolution will not be reattempted until the update interval of central has 
elapsed or updates are forced. Original error: Could not transfer artifact 
org.springframework:spring-webmvc-portlet:pom:3.0.6.RELEASE from/to central 
(http://repo.maven.apache.org/maven2): java.net.ConnectException: connection 
timed out to 
http://repo.maven.apache.org/maven2/org/springframework/spring-webmvc-portlet/3.0.6.RELEASE/spring-webmvc-portlet-3.0.6.RELEASE.pom

Failure to transfer org.codehaus.mojo:cobertura-maven-plugin:pom:2.5.1 from 
http://repo.maven.apache.org/maven2 was cached in the local repository, 
resolution will not be reattempted until the update interval of central has 
elapsed or updates are forced. Original error: Could not transfer artifact 
org.codehaus.mojo:cobertura-maven-plugin:pom:2.5.1 from/to central 
(http://repo.maven.apache.org/maven2): java.net.ConnectException: connection 
timed out to 
http://repo.maven.apache.org/maven2/org/codehaus/mojo/cobertura-maven-plugin/2.5.1/cobertura-maven-plugin-2.5.1.pom

Missing artifact aopalliance:aopalliance:jar:1.0
-----------------

The first two are somewhat unique, but there were many occurrences of the third 
one, with different coordinates.

The project builds fine from the command line outside of Eclipse.

I've tried doing "Update Project", both with and without the "Force update of 
snapshots/releases" flag.

I also tried "Project"->"Clean..." and selected "Clean all projects".

I tried entering those two urls that it's claiming it's failing to connect to, 
in both my external Firefox, and in the internal Eclipse browser.  No problems 
there.

When I explore the "Maven Dependencies" tree in the Package Explorer, I find 
all of these libraries that m2e says it can't find (the "Missing artifact" 
message).

I've also tried restarting Eclipse.  No change.
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