We have two HPs and love them. We have had no problem with either. Norton...now that's another story. I HATE those programs. Our anitvirus is the free AVG version and works great. I run spyware and malware periodically. As for the computers, we haven't had any issues with the desk top or the laptop. I'd buy HP again in a heartbeat. The one I hate is Gateway!! Don't even get me started.........
Edited to say: Now, if I had the money, it would be Mac all the way in this house. THAT isn't happening anytime soon, so I still like my HPs.