Since a reboot this morning no controls on any window work. Even right clicking on the program in the taskbar doesnt display the menu with close, maximize etc.
The buttons at the top right of a window look like they work but nothing happens when clicking Minimize, Maximize or close. Grabing the side of a window displays the resize mouse icon but the window wont resize.
This is for all programs and windows.
By Chance did you remove or change the user32.dll.mui in the past couple of days? I know a lot of people are using a modified user32 file to remove the Vista Evaluation watermark from the desktop. If so I hope you backed up the original so you can revert.
Hope this helps.