Windows 7 Taskbar Thumbnails disappearing

Hey guys, i just randomly started having this issue. When i mouse over the open window icons on the taskbar the live preview shows up then disappears almost right away, and when it does stay it doesnt stay up for long and when i try to click on something it disappears. This is really frustraiting!! Im running 7 with all updates that have gone out.

Any help is appreciated! Thanks.