So, I have done a Microsoft Antispyware scan and found nothing. I have tried to do a full Virus scan, but when McAfee scans certain zip files, it takes too long (i.e. 20 min and still hasn't even passed the file it has been scanning) so I have been unable to do a full scan. But, is it normal for McShield to utilize the CPU (up to 98% when I was installing Catalyst drivers!!!) when I am accessing files, docs, etc?