My Girlfriend and I have recently run into this issue where periodically the program/game that we're using will lose focus all of a sudden. I've seen it occur while playing Left 4 Dead 2, FFXI, various steam chat windows.
This has only started happening fairly recently, and the only thing I can think of is that AVG had an "upgrade to AVG 9.0" pop up that would appear quite frequently and grab focus over other programs. Has anyone else run into this issue and know of a fix? We both encountered the AVG upgrade window as an added note, since we're both using AVG.
Thanks