Created attachment 407781 [details]
File: backtrace

How to reproduce
-----
1. Again opened the UPS page and clicked About Your UPS.
2. Same fault occurred.
3.

Created attachment 407782 [details]
This is the htm file that is opened when Firefox crashes.

This is the htm file that is opened when Firefox crashes.

How to reproduce
-----
1. I had the APC UPS Interface Web page open - and was browsing on other pages when it crashed.
2.
3.

How to reproduce
-----
1. I had the APC UPS Interface Web page open - and was browsing on other pages when it crashed.
2.
3.

How to reproduce
-----
1.  CORRECTION:  Open UPS Management page, and just leave it.  Firefox will crash.
2.  When opened on Seamonkey, there is an additional item appearing in the menu.
    "3-Phase Display" appears briefly then DISAPPEARS on the Firefox menu.  A little later the crash occurs.


Comment
-----
I will attach the "menu.htm" file.

Created attachment 407818 [details]
Javascript in this file might be causing the crash.

Javascript in this file may be causing the crash.  There are menu items which disappear and later firefox HANGS and CRASHES.

How to reproduce
-----
I don't know if this can be reproduced (haven't tested it yet).


Comment
-----
This is probably related to Java.

I went to http://netalyzr.icsi.berkeley.edu/, clicked Start Analysis, clicked OK on the popup to allow the Java applet to run, let it run for a while, read the results page for a while, then clicked back a few times to get back to the start page, and clicked Start Analysis again.  Then in a space of a few seconds: I clicked Cancel on the Java applet popup, clicked back and forward once or twice, and the browser froze briefly and then crashed.  So this might be related to clicking Cancel on the popup, or to the forward/back on pages containing Java applets.

*** Bug 573956 has been marked as a duplicate of this bug. ***

#2  <signal handler called>
No symbol table info available.
#3  GetURLRunnable::Run (this=0x7f2acaff5c40) at IcedTeaPlugin.cc:1478
        ownerGetter = {<nsCOMPtr_base> = {
            mRawPtr = 0x7f2acbf35df0}, <No data fields>}
        owner = 0x0
#4  0x00000036faec5b9b in nsThread::ProcessNextEvent (this=0x7f2af013b790, 
    mayWait=1, result=0x7ffff09a5258) at nsThread.cpp:521
        notifyGlobalObserver = 1
        obs = {<nsCOMPtr_base> = {mRawPtr = 0x7f2ae7f22048}, <No data fields>}
        event = {<nsCOMPtr_base> = {
            mRawPtr = 0x7f2acaff5c40}, <No data fields>}
        rv = 0
#5  0x00007f2ad73802c4 in IcedTeaPluginFactory::GetJavaObject (
    this=0x7f2aceafa360, instance_identifier=<value optimized out>, 
    object=<value optimized out>) at IcedTeaPlugin.cc:2825
        reference = 0
        container = <value optimized out>
        startTime = 1271753800
        objectMessage = {<nsCStringContainer> = {<nsACString> = {<No data fields>}, <nsStringContainer_base> = {d1 = 0x7f2acfb19be8, d2 = 37, 
              d3 = 5}, <No data fields>}, <No data fields>}
        processed = 1
        result = 0
#6  0x00007f2ad737e52c in IcedTeaPluginInstance::GetJavaObject (
    this=0x7f2acfcba860, object=0x7ffff09a5308) at IcedTeaPlugin.cc:2659
        _trace = {name = 0x7f2ad7395cbd "Instance::", 
          function = 0x7f2ad7398c9e "GetJavaObject"}
        __func__ = "GetJavaObject"
#7  0x00000036faaa952e in nsHTMLPluginObjElementSH::GetJavaPluginJSObject (
    cx=0x7f2acf920c00, obj=<value optimized out>, plugin_inst=0x7f2acfcba860, 
    plugin_obj=0x7ffff09a5498, plugin_proto=<value optimized out>)
    at nsDOMClassInfo.cpp:9662
        jvm = {<nsCOMPtr_base> = {mRawPtr = 0x7f2ad2723390}, <No data fields>}
        javaPluginInstance = {<nsCOMPtr_base> = {
            mRawPtr = 0x7f2acfcba868}, <No data fields>}
        rv = <value optimized out>
        manager = {<nsCOMPtr_base> = {
            mRawPtr = 0x7f2acfcba860}, <No data fields>}
        appletObject = 0x0



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

*** Bug 569292 has been marked as a duplicate of this bug. ***

*** Bug 585883 has been marked as a duplicate of this bug. ***

This bug has been triaged



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

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