I have a wonderful habit of binding “open a terminal” in gnome’s System -> Preferences -> Keyboard Shortcuts dialog to the Windows key. This is the key that in WIndows would typically open up the start menu. However, I wasn’t able to do so after an update to Fedora 12. I would press the key in the shortcuts window, and nothing would happen. I could combine the Windows key with another key, and it recognized the Windows key as mod4, a modifying key like control or alt. I figured out the problem, just run this command to unbind the windows key as a modifier and go back to it just being known as “Super_L”:

xmodmap -e “remove mod4 = Super_L”

Then go back into the Keyboard Shortcuts list and try again. Super_L should now show up in the window when you hit the key.