We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash ID's to help us learn more about your crash.

1. Enter about:crashes in the address bar (that's where you enter your website URL) and press Enter. You should now see a list of submitted crash reports.
2. Copy the 5 most recent crash ID's that you see in the crash report window and paste them into your response here.

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Hi Waka_Flocka_Flame,

I have no crash reports, as I have to Force Quit (Mac Option) as the browser freezes.

Best Regards

Ok, how about trying safe mode, possibly your problems are caused by Firefox's use of Hardware acceleration or a addon, see the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for more.

I have the same problem, I've tried to disable hardware acceleration and launch Firefox in safe mode (with all extensions turned off). Bug still there.

Simpliest way to reproduce - got to http://www.twitch.tv/ and start turning channels: enter one game, view few channels, than press link to main page, than pick another game, it usually need less than 10 clicks to get this freeze. After browser freezed, nothing work at all - menu clicks do nothing, unable to switch tabs, or do anything, only OS X "Force Quit" feature works.

Firefox 23.0.1, OS X 10.8.4, iMac mid-2011 with 12Gb RAM

i think a work-around is to always open Twitch VODS and streams in a new window