Created attachment 401436 [details]
File: backtrace

#3  <signal handler called>
No symbol table info available.
#4  0x06c7135e in XPCJSRuntime::GCCallback (cx=0xb4d0f000, status=JSGC_END)
    at xpcjsruntime.cpp:776
        obj = 0xaaf2683f
        array = <value optimized out>
        dyingWrappedJSArray = <value optimized out>
        self = 0xb7424200
#5  0x07091d95 in DOMGCCallback (cx=0xb4d0f000, status=JSGC_END)
    at nsJSEnvironment.cpp:3714
        result = <value optimized out>
#6  0x06c5d4aa in XPCCycleCollectGCCallback (cx=0xb4d0f000, status=JSGC_END)
    at nsXPConnect.cpp:411
No locals.
#7  0x00999626 in js_GC (cx=0xb4d0f000, gckind=<value optimized out>)
    at jsgc.cpp:3792
        savedWeakRoots = {newborn = {0xb5bd2520, 0x6c74553, 0x7d1cf44, 
    0x6c5d5ef, 0x7d1cf44, 0xbf982418, 0x6c5ecef, 0xb718a470, 0xb4d0f000, 0x3, 
    0x3, 0xaa94df80}, lastAtom = -1080548340, lastInternalResult = 
    -1220415808}
        tvr = {down = 0xb7431270, count = 131190596, u = {value = 0, object = 
    0x0, string = 0x0, xml = 0x0, trace = 0, sprop = 0x0, weakRoots = 0x0, 
            compiler = 0x0, script = 0x0, array = 0x0}}
        keepAtoms = 0
        i = <value optimized out>
        trc = {context = 0xb4d0f000, callback = 0}
        a = <value optimized out>
        emptyArenas = <value optimized out>
        arenaList = <value optimized out>
        allClear = <value optimized out>
        callback = <value optimized out>
        thing = <value optimized out>
        requestDebit = <value optimized out>
        rt = 0xb71b9000
        type = <value optimized out>
        thingSize = <value optimized out>
        flags = <value optimized out>
        freeList = <value optimized out>
        ap = <value optimized out>
        flagp = <value optimized out>
#8  0x00972b02 in JS_GC (cx=0xb4d0f000) at jsapi.cpp:2459
No locals.
#9  0x06c5cf4b in nsXPConnect::Collect (this=0xb718a470)
    at nsXPConnect.cpp:477
        cycleCollectionContext = {<nsAXPCNativeCallContext> = {
            _vptr.nsAXPCNativeCallContext = 0x7c608f8}, mState = 
    HAVE_CONTEXT, mXPC = 0xb718a470, mThreadData = 0xb5bd25e0, mXPCContext = 
    0xb41a60a0, mJSContext = 0xb4d0f000, mContextPopRequired = 1, 
          mDestroyJSContextInDestructor = 0, mCallerLanguage = LANG_NATIVE, 
          mPrevCallerLanguage = LANG_UNKNOWN, mPrevCallContext = 0x0, 
          mOperandJSObject = 0x757c9ee, mCurrentJSObject = 0x74cf494, 
          mFlattenedJSObject = 0x19, mWrapper = 0xf519f85a, mTearOff = 
    0x764b510, mScriptableInfo = 0x7a, mSet = 0xb716f0ac, mInterface = 
    0xf519f85a, mMember = 0xbf9824d8, mName = 122414992, 
          mStaticMemberIsLocal = 0, mArgc = 123193838, mArgv = 0x74cf42a, 
          mRetVal = 0x7d1cf44, mReturnValueWasSet = 124040464, mMethodIndex = 
    0, mCallee = 0x0, mStringWrapperData = 
    "\356\311W\a\020\265d\a\000\000\000\000\000\000\000\000C\370L\a\323t\024\000\004\000\000\000\000\000\000"}
        cx = 0xb4d0f000



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

*** Bug 589273 has been marked as a duplicate of this bug. ***

*** Bug 591232 has been marked as a duplicate of this bug. ***

Package: firefox-3.5.9-2.fc12
Architecture: i686
OS Release: Fedora release 12 (Constantine)


How to reproduce
-----
1.watching youtube using gecko plugin, sometimes a popout of the gecko/gnome mplayer would be present, i.e. 2 instances of gecko/gnome mplayer
2.
3.

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

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