Mouse cursor causes MOHAA to minimise?
 

When I move my cursor around in MOHAA, if the cursor goes to far upwards, when I click, MOHAA loses focus, minimises, and I get my desktop!?

I then have to ALT-TAB back into MOHAA which is quite annoying.

Can anyone help?

For some reason your MOH:AA must not be maximized all the way. Probally go back and click up high to get it to happen the right click on it on ur taskbar and click maximize and then go back in. Other than that, I dunno what could be wrong.