I am running Mac OS X 10.7.4 and Firefox 15.0.1 on a Macbook Pro 9,1. Almost every time I close firefox, the computer freezes completely and/or has a kernel panic, and in all situations I have to hard-reboot the machine. I've tried uninstalling other 3rd party apps and have sourced the problem to firefox. When I view the system report of the crash after rebooting, it says that the source of the crash was from a firefox process and something related to Nvidia Geforce. I was wondering if this may be related to the graphics switching on the new macbooks (I have a intel 4000 + a Nvidia 650m), however, I still get crashes when I turn off automatic graphics switching. My other thought was perhaps this problem has to do with hardware acceleration. Unfortunately, I tried disabling hardware acceleration in firefox and it still caused the computer to crash.

I'm happy to hear any suggestions! I don't want to have to switch to another browser, but using firefox 15 in its current state has made my computer unstable and unusable.