Thank you for the crash report, and I'm sorry you are having crashes in Firefox. May I ask what processor you have in your computer? The crash report you gave looks like it is [@ CSMP_PVFUNCS::CreateWorkerThreads(int, unsigned long) ] ([https://crash-stats.mozilla.com/report/index/a362f6c9-8364-45dc-a8b9-ca3982120511 https://crash-stats.mozilla.com/report/index/a362f6c9-8364-45dc-a8b9-ca3982120511]. This was reported to Firefox developers as [https://bugzilla.mozilla.org/show_bug.cgi?id=650166 Bug 650166], which is a duplicate of [https://bugzilla.mozilla.org/show_bug.cgi?id=669024 Bug 669024]. Try to start Firefox in [[Safe mode|Safe mode]]. This mode disables all extensions, user customizations, hardware acceleration, etc. temporarily for diagnostic and troubleshooting. If it works fine in Safe Mode, try to Update your graphics driver (Firefox uses your graphics card for some rendering, and an out of date graphics card driver can cause problems. [https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers]. You can also turn off hardware acceleration if updating your graphics driver doesn't work: [[How do I upgrade my graphics drivers?#w_turning-off-hardware-acceleration|Turning off hardware acceleration]]

been having the same problem for a couple of weeks, with mine it was Java had been disabled due to security issues on the version i had. I'm guessing firefox disabled it due to security concerns and then because it was disabled it was never picked up for an update when java updates on the computer. Check your add-ons, if its disabled enable it and go to the java website, click the link http://www.java.com/en/download/installed.jsp, which will then update you. Hope it works for you.

sorry wrong thread.