I'm experiencing a problem in Windows 7 x64 where there are a large number of blank spaces in my "notifications icons" popup. These same gaps appear if I change the setting to show all icons. If I hover of the gaps, the spaces indicate that I've hovered over them, but there is no text popup indicating what I'm hovering over, and there's no reaction by right or left clicking on the space.
There's nothing unusual running in my process list, and my system has come up clean using a variety of malware, spyware and antivirus checks.
I'd like to get it back to normal. I've tried closing the running applications, but it doesn't seem to resolve the issue. Any ideas?
There's an image of the problem here: http://twitpic.com/26tttz