Created attachment 396980 [details]
File: backtrace

the crash happening in different ways:
1. flash player
2. close/open tab

sometimes the machine freezing and sometimes i am getting black screen and machine stuck.

*** This bug has been marked as a duplicate of bug 569291 ***

#2  <signal handler called>
No symbol table info available.
#3  0x00007f784d6798fe in GetURLRunnable::Run() ()
   from /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/IcedTeaPlugin.so
No symbol table info available.
#4  0x0000003ed34c471b in nsThread::ProcessNextEvent (this=0x7f7862f3b790, 
    mayWait=1, result=0x7fffe79abdec) at nsThread.cpp:521
        notifyGlobalObserver = 1
        obs = {<nsCOMPtr_base> = {mRawPtr = 0x7f785ad1a048}, <No data fields>}
        event = {<nsCOMPtr_base> = {mRawPtr = 
    0x7f7849724180}, <No data fields>}
        rv = 0
#5  0x0000003ed3497f3d in NS_ProcessNextEvent_P (
    thread=<value optimized out>, mayWait=<value optimized out>)
    at nsThreadUtils.cpp:247
        val = 1
#6  0x0000003ed3416e9d in nsBaseAppShell::Run (this=0x7f785ad1a040)
    at nsBaseAppShell.cpp:170
        thread = 0x7f7862f3b790
#7  0x0000003ed32da854 in nsAppStartup::Run (this=0x7f7862febcc0)
    at nsAppStartup.cpp:193
        rv = <value optimized out>




-- 
Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers

Actually, it's not a dupe of 569291, not according to the back-trace. It is actually a dupe of 553612, but I'm not marking it as a dupe yet, since we need some more information. 

If you are able to reproduce this bug, please:

Thank you for taking the time to submit this bug report.

We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.

First of all, could we get output of the command, saved in a text file and attached to this bug:

 $ rpm -qa *xulrun* *firefox* *mozilla* *flash* *plugin*

Please also install firefox-debuginfo.

 # debuginfo-install firefox

Then run firefox inside the gdb debugger. Please do the following:

 $ firefox -g

Stuff will appear. Ignore this until you get the gdb command prompt, then do:

 (gdb) run

Now, firefox should start up. Use it and reproduce the crash. When firefox crashes, you should be back to the gdb prompt. Now do:

 (gdb) thread apply all back-trace

More screens of stuff will occur. Copy all of this part to your editor of choice, such as gedit, and save it as an uncompressed file and attach it to this bug report.

We will review this issue again once you've had a chance to attach this information.




-- 
Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers

Resetting to New and NEEDINFO.



-- 
Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers

[root@lnxpc1666 ~]# rpm -qa *xulrun* *firefox* *mozilla* *flash* *plugin*
gstreamer-plugins-base-0.10.25.1-2.fc12.i686
gstreamer-plugins-ugly-0.10.13-1.fc12.x86_64
abrt-plugin-logger-1.0.7-1.fc12.x86_64
gdm-plugin-fingerprint-2.28.2-1.fc12.x86_64
totem-mozplugin-2.28.5-1.fc12.x86_64
nspluginwrapper-1.3.0-10.fc12.x86_64
abrt-plugin-runapp-1.0.7-1.fc12.x86_64
plymouth-plugin-two-step-0.8.0-0.2009.29.09.19.3.fc12.x86_64
audacious-plugins-2.2-23.fc12.x86_64
setroubleshoot-plugins-2.1.40-1.fc12.noarch
PackageKit-yum-plugin-0.5.6-1.fc12.x86_64
firefox-3.5.8-1.fc12.x86_64
abrt-plugin-bugzilla-1.0.7-1.fc12.x86_64
gstreamer-plugins-flumpegdemux-0.10.15-8.fc12.x86_64
xulrunner-devel-1.9.1.8-1.fc12.x86_64
PackageKit-gstreamer-plugin-0.5.6-1.fc12.x86_64
gstreamer-plugins-good-0.10.17-4.fc12.x86_64
java-1.6.0-openjdk-plugin-1.6.0.0-33.b16.fc12.x86_64
mozilla-filesystem-1.9-5.fc12.x86_64
nspluginwrapper-1.3.0-10.fc12.i686
anaconda-yum-plugins-1.0-5.fc12.noarch
report-plugin-bugzilla-0.7-1.fc12.x86_64
alsa-plugins-pulseaudio-1.0.22-1.fc12.x86_64
xulrunner-1.9.1.8-1.fc12.x86_64
gstreamer-plugins-base-0.10.25.1-2.fc12.x86_64
alsa-plugins-pulseaudio-1.0.22-1.fc12.i686
flash-plugin-10.0.45.2-release.i386
mozilla-vlc-1.0.4-1.fc12.x86_64
plymouth-plugin-label-0.8.0-0.2009.29.09.19.3.fc12.x86_64

I tried to run the firefox in debugger and when firefox crashed, all KDE crashed so i can't get anything from debugging window.
let me know how to proceed.

thanks

Thank you for taking the time to make this bug report.

This particular bug has already been reported into our bug tracking system, but please feel free to report any further bugs you find.



-- 
Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers

*** This bug has been marked as a duplicate of bug 583946 ***