It's a new NXT that came in this year's competition kit with the rechargeable battery pack. We put the battery pack in it the first day and it's never been removed.
We are going to relocate the NXT for regionals so we'll have it pulled out within the next week. I will look carefully at this as a possibility.
See my new post today concerning losing control during the match.
http://www.chiefdelphi.com/forums/sh...d.php?t=124628
We've got a gremlin somewhere in our robot and it may indeed be unstable NXT power. It's one of the few things we haven't seriously looked at by now.