1. Yes, Bitdefender is LOOONG gone. I'm not sure if the machine will take SP1. I'll try, though.
2. I only have 1 antivirus currently, McAfee Total Protection.
3. I haven't had the problem since earlier, and I'm on the machine right now, and whilst a little slow, she's doing fine.
4. I can back everything up, but formatting and reinstalling everything sounds scary. I'm no computer expert, you see. I only know the basics of computers.
Tell you what, I'll back everything up, and then I'll update to SP1 and see what happens. (I've never updated my service pack before, so I'm actually a bit scared. I'm such a coward!
)