I had the same darn problem. Can't do "safe mode" because the screen doesn't stay up long enough. I'm miffed because I can't access my bookmarks and passwords. I had to create a new user account for my compy and then load the 7.01 version of Firefox. It's giving some relief but I"m still mad. Have you had any luck restoring yours at all?.

Since a few days we have a lot of crashes with Trusteer Rapport. If you have this program, try to disable it and see if that stops the crashing.
You can stop Rapport using Start Menu > Programs > Trusteer Rapport > Stop Rapport
You can ask their helpdesk when an updated version of their product will be made available or, if you don't need this software, uninstall it.
http://www.trusteer.com/support/en/report-problem

If you do not have Rapport, then we need to have a crash report ID. When you send Mozilla a crash report it just puts it in a giant database. We have no way of looking it up without the Report ID. I have no idea what is wrong without looking up the crash report. Please get the Report ID of your latest crash report.
See https://support.mozilla.com/en-US/kb/Firefox%20crashes
or http://kb.mozillazine.org/Firefox_crashes