|The only for sure way is to reload it from a known original Windows dvd and see what is in it.|
Most companies that offer pre-installed versions could have added in all sorts of stuff.
It could be an issue with some malware too. Just too hard to say. Blocking ports and applications with a good firewall helps.
Be sure to run your system as a standard user at all times. Have a good password on the admin account. Use run as when you need admin.
Hang up and live.