This is just on the desktop sitting idle, with one Google chrome tab open, containing flash content. It seems that Microsoft Security Essentials stutters a bit on all Win7 machines, when you drag it off the visible display area. The Chess game also does it a bit. Chrome is different though it stutters/lags loads when you do the same with windows containing flash content; Firefox and IE9 don't have this issue, neither does V20 of Chrome...must be a bug.
CPU is 29c and GPU is 39c, when idle doing this.