EDIT: Old thread topic changed, was looking for an antivirus program to run at boot-up on a Vista 64 machine.
The issue is my hard drive being constantly hit throughout the day, whether the computer is idle or I'm running a program.
Several other Vista users report SVCHost.exe (one of 9 copies of that service currently active on my PC) is the active service hitting the hard drive. Diving into the resource monitor shows it is reading the hard drive, a LOT, but not writing anything, which is somewhat relieving.
If I stop the service, the hard drive churning stops, only it starts itself back up again after a while. It's looking a little less malicious, more just annoying.
So the question is:
1. Is this an innocent, intended behavior?
2. Is this a virus hijacking the svchost process or mimicking it?
3. If it is innocent, is it a necessary service?
4. If it is not necessary, how do I stop it and keep it stopped?