Every once in a while, one of my windows switches to "Always on top" mode. There's no rhyme or reason to this; I can't think of any mouse or keyboard sequence that does it as it appears completely randomly. It's naturally quite annoying as the only way around it is to close down the offending window.
This has been happening since I got the laptop a couple months ago. It's a Dell M6600 running Windows 7 Ultimate 64-bit.
I have an nVidia card but nView is disabled, so I know that's not the culprit. I suspect that monitor switch icon that shows up to the left of the minimize button might have something to do with it, but I can't figure out how to remove that thing.
Any help would be greatly appreciated.