Haven't had any of the problems others have mentioned, including the infamous Check Disk errors. It's running lighter than version 6 did on my PC. For some reason KAV 6 ran fine but KIS 6 noticably slowed me down. No such problems with this version. I find the HTTP scanner to also be lighter. The only slowdown I notice is when I first open my browser, it takes a few extra seconds, but after that... clean sailing. The PDM has also allowed me to ditch my HIPS which also has freed up resources. I was a very satisfied Nod32 user and have nothing bad to say about their product whatsoever, but KIS 7 has won me over, so far anyway.