I use AVG, and I can run a full virus scan at anytime, and not even know it's running because it doesn't slow down my machine at all. How much RAM do you have and what kind of AV scanner are you using? I'm running on 4GB of DDR2.
I can run a scan in the background, slows down the comp. but it will run.
However it interrupts me to ask me whether I want to download, etc.
If I have it on automatic, I really get frustrated.
Hopefully by the end of the summer I'll have a Mac desktop and say adios to MS and virus scans.
Typing this on the Mac laptop, getting ready to go to work.
I’m running AVG on a laptop with 1.25 Gb of RAM and have no problem with it scanning in the background.
I use the free AVG. I used to use McAfee and Norton before that and would occasionally get a virus they missed or coldnt’ handle. I have had AVG for much longer than I had both of the others together and have not had any virus problem with it at all.