I have no idea if this is related but from pkg-message
Firefox 3.6 and HTML5

Certain functions used to display HTML5 elements need the sem module.

If your Firefox crashes with the following message while viewing a
HTML5 page:
"Bad system call (core dumped)"

you need to load the sem module (kldload sem).

To load sem on every boot put the following into your
/boot/loader.conf:
sem_load="YES"

On Mon, Feb 8, 2010 at 9:04 PM, O. Hartmann <ohart...@zedat.fu-berlin.de>wrote:

> On 02/08/10 16:20, Gary Jennejohn wrote:
>
>> On Mon, 08 Feb 2010 13:32:25 +0000
>> "O. Hartmann"<ohart...@zedat.fu-berlin.de>  wrote:
>>
>>
>>
>>> Today, I upgraded Firefox 3.5.7 (built yesterday) to Firefox 3.6. After
>>> deleting ~/.mozilla (after I did a buckup, of course), I tried a fresh
>>> start of 'firefox3'. After firefox showed up, I realized that no
>>> option-field (File, Extras etc) can be used, they are dead and after a
>>> few seconds I clicked them, firefox3 is crashing.
>>>
>>> Since I recompiled firefox 3.5.7 yesterday I was wondering if this is
>>> due to some 'false' lib or dependency. Since I figured that I have
>>> similar trouble with Thunderbird 3.0.1 after I installed it, I suspect a
>>> faulty library causing this behaviour. With Thunderbird 3, I never
>>> solved the problem although I tried to rebuild everything with
>>> thunderbird via 'portmaster -f'. I'll did this with firefox 3.6 also,
>>> but with no success.
>>>
>>> The crashing is observed on two nearly identical SMP FreeBSD 8.0/amd64
>>> STABLE boxes (make world of today), up-to-date ports. The crash is NOT
>>> observed on my private oldish UP box, nearly the same setup, OS at the
>>> same revision and ports up to date as of yesterday. Maybe this could be
>>> a hint.
>>>
>>> Any hints or suggestions?
>>>
>>>
>>>
>> Try doing "ldd /usr/local/lib/firefox3/firefox-bin" and see if anything
>> looks weird.
>>
>>
> I did - and there is nothing weird.
>
> I checked the installed libraries and they are all rebuild when rebuilding
> necessary dependencies for firefox3.
>
>
>  You can porbably ignore
>> /usr/local/lib/firefox3/firefox-bin:
>>         libxul.so =>  not found (0x0)
>>         libmozjs.so =>  not found (0x0)
>>         libxpcom.so =>  not found (0x0)
>> because run-mozilla.sh sets LD_LIBRARY_PATH to include
>> /usr/local/lib/firefox3 where these libraries are installed.
>>
>> I merely deleted my old firefox 3.6 and reinstalled from the port (on
>> 9-CURRENT AMD64) and haven't seen any problems.  But of course, I've
>> been running various incarnations of 3.6 for a while and may have gotten
>> all the dependencies already correctly installed.
>>
>> ---
>> Gary Jennejohn
>> _______________________________________________
>> freebsd-stable@freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-stable
>> To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
>>
>>
>
> I tried again, left the 'make config'-options as they were set by default,
> delete/backuped .mozilla in my home and they restartet firefox3. Nothing
> better than previously seen. Try hitting Button 'Tools' at the top menu bar
> gives a menu after several seconds, then firefox crashes/core dumps.
>
> Oliver
>
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