This started a few days ago. All the shortcuts work except Command-q. Not just Safari, everything. Yet when I use Command-tab to shift from app to app and hit Command-q from that screen, the app will quit. I've run Disk Warrior, Xupport, and of course, Disk Utility. I've trashed finder preferences. The "q" key works, as does the Command key. I'm using the wireless keyboard--if that matters. I haven't swapped out the keyboard yet, but I doubt if that's the issue, since all the keys work. Basically it's a shortcut I can live without, but it's driving me nuts. Did I inadvertently turn off a shortcut? Is that possible?