Fullscreen app problems on '11 13" Air

[robots3humans0]

I bought my new Air about 2 weeks ago (sold my 13" pro, great choice) and since pretty much day 1 I've had some issues with Mail and iCal when in fullscreen. Every so often they'll stop responding to click inputs (i.e. i can't click anywhere). I have to shrink them down from fullscreen, quit, and reopen before they'll respond to anything. The processes are responding (says the Fore Quit menu at least) so that's not the issue. I'm pretty confused as to what's going on. I think reinstalling Lion might be my best option but I'd rather not resort to that.

Any thoughts?

 

[Detrius]

Are they popping up dialogs?

 

[robots3humans0]

Nope. Nothing.. completely unresponsive. I'm just confused because apparently they're not "Not Responding" when I open the force quit menu. But I still can't use them.

 

[thatisme]

I get that in Safari occasionally on mine (13" '11 MBA), but it hasn't happened in other apps in full screen or otherwise.