(...) Sounds like there was some corruption in your user profile. You might want to delete that and try again -- C:\windows\application data\mozilla\profiles or C:\windows\all users\application data\mozilla\profiles or somewhere. (23 years ago, 13-Nov-01, to lugnet.off-topic.geek)
(...) This is far from my area of expertise, but I've seen it in all of those places. Maybe version-of-mswindows related, maybe version-of-mozilla. (23 years ago, 13-Nov-01, to lugnet.off-topic.geek)