Posted 24 April 2006 - 06:44 PM
You can indeed have more than one AV on your hard drive, as long as only one is active at a time giving you real time protection (consequently, be sure you understand how each operates and how to completely turn them off). However, it can happen that one AV will report the other's virus database or quarantine file, so you have to be very careful about the path shown for the malware reported.
If you want a "second opinion" AV, then there are many of these available on-line that will scan your computer, and without your having these on your hard drive. Quite frankly, though, I don't think you get much "bang for the buck" having multiple resident AVs.
Whereof one cannot speak, thereof one should be silent.