I think theres a hotkey for it so you might be hitting that but its happened to me too. (not sure if i hit the hotkey or not)

This happens to me too, often.

I have had the same problem for a while now too. I actually just completely stopped playing on my desktop computer, since nobody had a solution for it. But if you are pretty sure it is the Windows 7 taskbar (which actually makes a lot of sense, since it only seems to happen when you click the lower portions of the screen), then maybe putting it on auto-hide would help?

It would be great if someone could let us know if this issue is being worked on right now, and when we can expect it to be resolved.

I have the same problem so if you find the solution please reply to this thread. Thanks

Many, many programs can do this, especially in windows 7 which unlike XP does not have a setting to prevent windows from stealing focus. Antivirus(or viruses), java/google update, even parts of windows. Close all running programs and put your AV on game mode before playing fullscreen. The taskbar bug mentioned is most likely Aero related. And if you're playing games with Aero enabled you're DOIN IT RONG.

Disable aero, set Windows Update to "Notify but don't download or install",
Do a virus scan and then get
Autoruns: http://technet.microsoft.com/en-us/s...rnals/bb963902
wait for it to load, then make sure options>"hide windows and system entries" is enabled, disable anything sketchy after googling it. Play around with it and use "disable" instead of "delete" unless you know exactly what you're disabling. Then finally
ctrl+shift+escape and check running processes. There shouldn't be alot of processes under "administrator". On my system I've got two for Setpoint, one for ACE, one for CCC, three from firefox,explorer, dwm, taskmgr and cfp(my AV). There shouldn't be much else on there.