Sometimes when I use Windows's "Show Desktop" button (the one built into Quick Launch), one of the items on the taskbar starts blinking/flashing and won't stop until I give it focus. This doesn't happen every time I use the button, but I'd say it happens more than half the time. I haven't noticed a pattern for which item blinks, or when the problem occurs.
Curiously, this happens on both my home computer, which runs Vista, and my work computer, which runs XP. Anyone have ideas on how to make it stop? It's not a major problem by any stretch of the imagination, but it's getting kind of irritating, mostly because it gives me a nagging "Something... Is Not Right" feeling.