xmonad mystery mending

I had been baffled because on the machines where I had set up xmonad I could not get the alleged exit keystrokes (Mod+shift+Q) to work. Turns out, it was a remnant from when I had experimented with using xmonad instead of Metacity in Gnome. Changing the main method in ~/.xmonad/xmonad.hs from gnomeConfig to defaultConfig fixed that.