Comment 30 for bug 689453

Happened again. The computer is an 8-core i7 Xeon, and I waited for 30s+ before attaching gdb, and the CPU kept going through the roof at 100% all the time, so I think it's definitely a hang. One more backtrace (not very helpful, I'm afraid).

(gdb) bt
#0 0x00007f674b4b2113 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=0)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1 0x00007f674c6dd2c9 in ?? () from /lib/libglib-2.0.so.0
#2 0x00007f674c6dd71c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3 0x00007f673b5dd337 in nsBaseAppShell::DoProcessNextNativeEvent (this=0x7f672e7aae10, mayWait=10)
    at /home/jonathan/Sources/comm-1.9.2/mozilla/widget/src/xpwidgets/nsBaseAppShell.cpp:155
#4 0x00007f673b5dd5cd in nsBaseAppShell::OnProcessNextEvent (this=0x7f67337457c0, thr=0x7f6747b28550,
    mayWait=0, recursionDepth=<value optimized out>)
    at /home/jonathan/Sources/comm-1.9.2/mozilla/widget/src/xpwidgets/nsBaseAppShell.cpp:311
#5 0x00007f674f807e05 in nsThread::ProcessNextEvent (this=0x7f6747b28550, mayWait=1, result=0x7fff00dc7d2c)
    at /home/jonathan/Sources/comm-1.9.2/mozilla/xpcom/threads/nsThread.cpp:508
#6 0x00007f674f7d439a in NS_ProcessNextEvent_P (thread=0x7f672e7aae10, mayWait=10) at nsThreadUtils.cpp:250
#7 0x00007f674f80815f in nsThread::Shutdown (this=0x7f671b0c4ee0)
    at /home/jonathan/Sources/comm-1.9.2/mozilla/xpcom/threads/nsThread.cpp:468
#8 0x00007f674f809058 in nsThreadManager::Shutdown (this=0x7f674fa6e880)
    at /home/jonathan/Sources/comm-1.9.2/mozilla/xpcom/threads/nsThreadManager.cpp:158
#9 0x00007f674f7d7534 in mozilla::ShutdownXPCOM (servMgr=0x7f6747ba9148)
    at /home/jonathan/Sources/comm-1.9.2/mozilla/xpcom/build/nsXPComInit.cpp:873
#10 0x00007f674fc94dc5 in ~ScopedXPCOMStartup (this=0x7fff00dc8440, __in_chrg=<value optimized out>)
    at /home/jonathan/Sources/comm-1.9.2/mozilla/toolkit/xre/nsAppRunner.cpp:1052
#11 0x00007f674fc984c2 in XRE_main (argc=<value optimized out>, argv=<value optimized out>,
    aAppData=<value optimized out>)
    at /home/jonathan/Sources/comm-1.9.2/mozilla/toolkit/xre/nsAppRunner.cpp:3527
#12 0x0000000000401b04 in main (argc=1, argv=0x7fff00dc8728)
    at /home/jonathan/Sources/comm-1.9.2/mail/app/nsMailApp.cpp:101

Is there anything useful you want me to do next time?