New
#11
Rosa,
No that registry entry is not the issue. It is pefectly normal for that option in Taskbar properties to be grayed out like that when you have aero peek disabled using the method in either OPTION THREE or OPTION FOUR in the tutorial.
I thought that you has aero peek disabled after uninstalling Aulogics Speedboost. I'm not sure why you tried to disabled it again. Go through each option in the tutorial again to make sure each one is set to disable aero peek to see if that may help.