Sometime my P1010's Home key doesn't work suddenly. Just like last night, my tab's power was off. Then the Home key stopped work when I rebooted it. But Back key, Menu key, and Search key still work. Why? This is the third time now. I have to restore factory defaults to solve this problem every time. But I need to reinstall all my apps after that for they're lost. It's very tiresome! Anyone can help me? please!