There is a way to fix this problem, and the fix is probably simple, it is just finding it that will be the problem.
No, there isn't.. well there is but it would imply not ever using Windows which would basically stop you from gaming. b/c I promise you the main cause is Windows on some level,
or you could play in windowed mode in games that support it which is the only known way around this but it's not a fix.
I'm tired of repeating this too, the alt-tab issue is
completely random granted it does have a habbit of of occuring more often in certain games than in others which logic dictates it's a combination of the game/engine/os/drivers. it's as simple as that and no fix has ever been found EXCEPT for playing in windowed mode which is unacceptable in most games. I can play a source game and alt tab 45 times and it won't do it then it randomly happens and i try 1 hour later and it could happen every other time.
It does happen
much more often in source games, BUT that's also on any configuration/os/dx version Keep in mind this still randomly happens in many other games.... just leave it as a side effect you have to deal with.