Today I experienced an unusual problem. My F3 and F4 keys were not performing their usual duties (exposé and dashboard respectively). They would not work at all. Nor would my keyboard shortcuts for Spaces or Spotlight. However, when I shut the computer and opened it back up again, it worked fine. Has anybody else had some weird minor issues like this? At first I thought it was related to an earlier problem where my keyboard was freaking out and wouldn't type most of what I was trying to type, until I realized my palm was on the trackpad while I was trying to type. Anyway, anybody else having this Fn key/keyboard shortcut problem?