I'm not going to bother reading through this thread but i did have something almost similar and here's what was wrong. I set the sensor bar right above my tv and it worked fine. The problem is, some times, it would behave funny and what i realized was that even though it was above my tv, my hands would sometimes go over the sensor bar or i'd stand up for certain wii sport games and it would be all funky cause i was now over the sensor bar (tho my settings said the bar was above the tv, i was actually above the sensor bar). I moved my bar further up.. no more probs.