I had only recently clean-installed M.Lion. This is the first time I'm having overall sluggishness caused by Chrome. I'm not sure what the problem is. The only extensions I use on Chrome are Google Dictionary and AdBlock. There is no Flash installed on my Mac. When I play video (Youtube) usually on Chrome; the video lags a lot and freezes constantly between play time. I'm using the latest version of Chrome : "Version 22.0.1229.79" I've updated to ML 10.8.2. If anyone has a solution to this problem, I'll appreciate it very much. Thanks.