Full screen applications randomly minimize, other apps lose focus

I am having a terrible time with this ONE problem. other than this, I kinda
like this new OS.

Here is the problem:

If I am running a full screen application (a game for instance), the window
will sometimes minimize itself to the system tray. I have no other foreground
applications running when this happens, so it just minimizes and all I am
looking at is my desktop. I tried closing out any bacground applications
(anti virus included) that I did not think were vital for the system to run
properly without success. I have noticed, however, that this does not happen
if I run Internet Explorer full screen.

Also, in other programs that might not be full screen, the program I am
working in will simply lose focus. This happens in nearly all programs as far
as I can tell (I lost focus of this window twice so far while I tried to
write this). It is a SERIOUS problem when I am working in photoshop that is
causing me a lot of grief.

It is possible that someone has come across this and knows of a solution to
this, and that would be great. But if not, I would settle for steps on how to
force focus on a program, and how to force a particular application to remain
full-screen.

Thanks in advance for any help

I have exactly the same problem; if you found a solution please let me
know! (I know it's an old thread but it describes my problem exactly and
I'm hoping the author may have found something out since).

If you AVG 9.0 as your anti-virus program, the cause and solution to this issue can be found here.

http://forums.techguy.org/windows-xp...-randomly.html