I also just restarted X with Ctrl-Alt-backspace, and when I logged back in, there was a crash report for Firefox. However, unlike the original submitter, Firefox isn't automatically restored by my gnome session, so it is probably the Firefox that was open before I restarted X that crashed.
Firefox restarted fine, and restored my session, so no biggy really.
I also just restarted X with Ctrl-Alt-backspace, and when I logged back in, there was a crash report for Firefox. However, unlike the original submitter, Firefox isn't automatically restored by my gnome session, so it is probably the Firefox that was open before I restarted X that crashed.
Firefox restarted fine, and restored my session, so no biggy really.