The GH2 has one major design flaw. The four way controller. The ISO and WB button are way to easy to hit and screw up. I have found a solution. I went to the Menu button and when to the Custom menu. There turn on Direct Focus Area. This allows you to select the focus area with the four way controller. What it does not allow you to do is select the ISO or WB. Problem solved. When I accidentally hit one of the buttons I get the focus area which can be gotten rid of by hitting the Menu button again. I am a happy camper. (Why did Panny assign those button on a small camera?)
DirectFocusArea on GH2