Anytime windows crashes or my computer unexpectedly restarts and Firefox is open, the "restore session" screen comes up, then no matter what (if anything) is clicked, Firefox promptly locks up. I have to create a new profile and copy over the profile folder contents every single time. It is very annoying and frustrating. I have tried deleting the entire profile folder after the crash, no change. I have uninstalled and reinstall Firefox (with and without thunderbird), no change. I have even go through the registry and manually deleted any mozilla and firefox key. It has been going on in releases 4.x, 6, and now 7.0.1