Sharon
Sharon,
As long as Firefox isn't running you can delete most of the temp files
without worry, but I would recommend using a program to do that for you.
A good, customizable program for just that reason is CCleaner. It's free
as in beer and it has no spyware, malware or other harmful hidden
software to speak of. Also, it's updated quite frequently.
You can get it at http://www.ccleaner.com/
Kind Regards,
HeyItsMe
There is a bug regarding the temp files:
https://bugzilla.mozilla.org/show_bug.cgi?id=281284 but this applies
to very old versions of Firefox and Mozilla Suite:
http://www.mozilla.org/security/announce/mfsa2005-28.html
--
Time for another change
Sharon