Sorry to hear about the crashes. If you are getting the Mozilla Crash Reporter form, your Firefox may have logged some data that would help track down the cause of the problem. You can submit that data to Mozilla and share it with forum volunteers to see whether it points to the solution. Please check the support article "[[Firefox crashes - asking for support]]" for steps to get those crash report IDs from the about:crashes page, or from disk, and then post some of the recent ones here. Also and/or meanwhile, could you try starting Firefox in its Safe Mode? That temporarily deactivates extensions, hardware acceleration, and some other advanced features of Firefox that might make it more prone to crashing on some systems. On Mac, hold down the option/alt key when starting Firefox. A small dialog should appear. Click "Start in Safe Mode" (''not'' Refresh). Any improvement?