I noticed the latest version of avast is freezing my system. I believe it is caused by the combination of avast and the latest NVIDIA video drivers, but I cannot be sure. I have version 62.20 of forceware drivers [while I know it is a beta version, I think the 61.77 are final, and they have the same problem]. The problem happens on another system too, so it isn't a system specific... I haven't seen this problem with early 5x.xx forceware drivers. Any suggestions?