Issue with Mozilla Firefox

[Martok]

Quick background:

My computer has an issue where it seemingly randomly restarts once or twice a day, regardless of what I was doing at the time -- I can be playing games, websurfing, or I might not be doing anything at all. (I suspect it's a virus, but I've not been able to track it down yet.) Anyway, given that Mozilla can restore whatever internet session(s) I've had up at the time of these involuntary shutdown/restarts, this was obviously a useful feature for me.

However, when I had another of these restarts a couple hours ago, Mozilla said it was undergoing maintenance at the time and that it therefore couldn't restore my sessions. This wasn't a big deal in and of itself -- I'd have been no worse off than if I'd been running IE7, after all -- but what *is* a problem is that all my Bookmark/Favorites on Firefox have now disappeared!

So is there a way I can restore them without having to redownload/re-install Mozilla? And (perhaps just as importantly) are my Bookmarked sites going to be deleted every time Mozilla is undergoing maintenance?

Please tell me the answer is "yes" to the former question, and "no" to the latter.