Hi, I am currently having the problem with task minimizing by them self.
I only have experianced this in FSX so far as this is the only program I have been running lately.
For example I am in a flight, doing things then my computer switches to my desktop(with no pop ups)

Will try restoring to last known working date as a last resort if noone knows what may be wrong.

I don't notice it in my browser since I always active
will update

And ive tried doing a scan with AVG and Spy Bot S&D

Edit- Read somewhere may be a video card driver, so I just updated.
I also just noticed this since 10-23-09 since thats when the second latest driver came out... wierd...