Steve and myself are having the same problem. A minute or two after starting up the computer a window will pop up telling us that we have 60 seconds before the computer restarts. The shutdown was initiated by NT AUTHORITY/SYSTEM. Has anyone run into this before that can give us some advice?
Oh yeah, and we both have XP.
There is also a message about Remote Procedure Call.
I’ve had that problem too. If I remember right, it’s a Windows Updates Installer. Just turn off auto-windows-updates and it shouldn’t appear.
Nevermind, I think I got it. Now just to see if it works.
No, it did not help.
I have XP, and the problem I usually have is when a program gets shut down, a report to Microsoft is sent by the program.
http://microsoft.com/technet/treeview/default.asp?url=/technet/security/bulletin/MS03-026.asp
This will solve your problems. 
Wee, it’s working so far.
So far so good, thanks Nero.
He’s probably the one that hacked you in the first place =P