I updated to 10.6.8 the other day and noticed my battery life was crushed. so i looked at activity monitor and the dockbar was using 100% cpu usage. I force quit the dock multiple times and even reboot and the issue remained. also my machine was running super hot. I googled this and got alot of hits and its related to Paralless 6. if you remove the windows folder from parallels from the dock and force quick the dock the dock goes back to normal usage. so if you have parallels and update to 10.6.8 be absolutely sure your dock isnt running at 100%. nasty bug and overworks your machine alot. this issue just isnt me its posted all over the net. thats how i knew how to fix it.