drawn games

Depends really. You should link to examples.
Most likely explanation is that you ran out of time and your opponent didn't have sufficient material left to mate. Possible that you stalemated your opponent too. Also, don't forget, it is repeated positions, not maneuvers so that could be the case.
thanks for the reply. I've never linked to a game before. does this work? Check out this #chess game: redrader vs MotownMJM - http://www.chess.com/livechess/game?id=1609712718