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Windows Key Stuck in RDP

If you lock your desktop with Windows + L key combination while an RDP session to another PC / server is active, the Windows key will be stuck in the "down" position in that RDP session. This is supposed to be fixed in Service Pack 1 for Windows Vista but still affects me running Windows 7 RTM. The workaround is to make sure the RDP session is active, and then lock the desktop again using Win+L. This will cause the Windows key to be stuck in the "up" position - much better.

Source: http://social.technet.microsoft.com/Forums/en/winserverTS/thread/cbaae74e-8311-4a46-a842-31dcdd6878dc