Windows key keeps getting "stuck"
Solution 1:
I've encountered the problem on my laptop, my desktop and my work desktop, so it's obviously not the keyboard (or it's all three). I usually see it when I'm using remote desktop.
I've found a thread suggesting it's a bug related to using Win+L to lock your screen and should be fixed in Vista SP-1, but obviously, it's not.
I've found that just pressing the windows key once seems to resolve it for me, until it happens again.