Er, sorry. I meant Firefox 2... the latest version.
I have XP, no antivirus programs that would be effecting it (it just recently started).
512 mb ram - I've been doing some research and after talking with a computer tech at my school, I believe the problem is my ram. Apparently part of my RAM is damaged or 'dead'. I think I'm just going to buy some new ram and hope that'll fix it.