Sounds more like a problem for Mozilla had, either the spyware blaster removed something from Mozilla (Don't know if Mozilla has spyware) and therefor Mozilla can't load succesfully. If you have a NT machine (NT4, 2000, XP) then you can look in the eventviewer and see if Mozilla reports anything. Or look for a log in it's program dir. Anyway, have you tried reinstalling mozilla ?
Otherwise; if this problem has been here before "groups.google.com" and search for something like "mozilla windows close itself" orsomething like that.
Edit
Or what vpamicue said :-) :lol: