This looks like a libimg crash. First thing I would try is a Clean Install then if that doesn't work try creating a new profile by going to Managing Profiles.

If neither of those work , please post back newer crash IDs

EDIT:

Here are the steps to perform a Clean Install.

Close Firefox completely. (File->Exit on Windows/Linux, Firefox->Quit on Mac)

Rename the Firefox installation folder or move it elsewhere.

• Windows: This is usually C:\Program Files\Mozilla Firefox. "Mozilla Firefox" can be renamed to "Old Firefox"
• Mac: This is usually Macintosh HD/Applications/Firefox.app. Macintosh HD/Applications can be opened in Finder, and Firefox can be dragged to Trash.
• Linux: The install location varies based on distribution and installation method. Linux distributions usually don't put Firefox in its own folder, so this method can't be used.

Download Firefox again from www.mozilla.com and install.

If this fixes the problem, you can optionally check the old install folder for global extensions, components, or corrupt/locked files.

I have same problem... I tried a lot.... I have changed the Processor,Motherboard and even HDD... I works for 2 hours perfectly...but after that it starts crashing...continuously...