QUOTE (jimmsta @ May 11 2008, 01:12 PM)

The most I've ever seen, however, was on a heavily infected worm-infested system, which had over 150 thousand infected files, sorta like the above 35 thousand-object example above. Both systems had variants of the Win32/Nuwar.gen worm.
Nuwar is the Storm Worm which uses a system driver to inject code into all PE (exe, dll, scr, ocx, sys) files on the computer, of course it can call for additional malware to be download, so it normal for almost every file to become infected on the pc through one worm. Consider yourself lucky if you notice this because some malware such as a rootkit will get below your AV and it will look like nothing is infected.
Once your compromised, all bets are off. In order to be sure your rootkit/hypervisor/bootcode free you need to at least scan the disk offline, or better yet just reformat.