hi, this may be a crash signature apparently related to new mac hardware. this has no fix yet, but is currently actively investigated by mozilla engineers in bug 1320048 - so you might want to follow along there as well...

Thank you. Definitely describes the issue I'm seeing.

We're sorry to hear that Firefox is crashing when you open it. Please do the following to give us crash IDs that will help us understand more about the crash.

1. (OS X 10.6 or previous) Click the Finder icon in the dock. Your home folder will be selected. In the right side of the window, click the Library folder to open it. Then open the "Application Support" folder, the "Firefox" folder, the "Crash Reports" folder and finally the "submitted" folder.
   (OS X 10.7 or above) Click the Finder icon in the dock. On the menu bar, click the Go menu, hold down the option or alt key and select Library. A window will open containing your Library folder. Then open the "Application Support" folder, the "Firefox" folder, the "Crash Reports" folder and finally the "submitted" folder.
2. Open the 5 most recent files with a text editor and copy the IDs.
3. Paste each ID with bp- into the reply window on the forums.

Thanks in advance!

You can find more information and troubleshooting steps in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Here you go:

bp-008fb151-755f-4f79-a02c-2b8e12161226 bp-56dbff3f-d1ba-4bca-af48-6fb842161224 bp-44f67ba7-5a45-4fe9-ab9f-8b5852161224 bp-ef3a08a9-2ee7-4910-883e-027a72161224 bp-840aefc6-0045-4023-ab1c-6654b2161223