SecurityCenter 8.1, VirusScan 12.1, Personal Firewall 9.1
I have the same problems. I have a second hard drive with large .ZIP and .RAR back up files containing large macro driven Excel files, as well as various other large files. After several hours each attempt, McAfee has never finished a scan. I cannot exclude the specific files from a scan either. Also, due to Real Time Scanning, I assume, my three computers have become very, very slow (long pauses) when dragging files into folders, opening and closing files, etc. I recently removed Symantec/Norton Security Suite. I have heard a lot of complaints about it, but it was a problem free rocket compared to this, and it never got stuck and you could exclude any file from being scanned. Both software suites were offered by AT&T DSL through their contract with first Symantec and now McAfee. McAfee refused support due to this arrangement, and AT&T has proven to not have adequate knowledge, let alone expertise in the matter.