when you say data theft what do you mean?
are you classing data as sum images that were stored on your hdd that may have been accidentally deleted?
Get a better browser!11! mozilla.com/en-US
Also if things are starting to slow down try a defrag, clean all your temp internet files, all you c-windows-temp files, and if your feeling really adventurous manually clean your registry...
do you get ramdom xxx popups? has your homepage changed?
~Use the free version of AVG http://free.avg.com/gb-en/homepage contains anti-virus and anti-spyware
I use the paid version and its fantastic :)
maybe your computer hacked or there is a system error in your pc so you must find it the problem first and download the latest antivirus(or antimalware,antitspy...)Somebody control my pc how can I stop it?
Disconnect your computer from the internet NOW if you suspect something is wrong. Then using a CD, install spybot, some anti virus software, etc.Can I find out what motherboard my pc has?