Mine was acting the same way. Sometimes the switch worked, sometimes it did nothing, sometimes it jumped up two patches. They have a 1 year warranty

. I just made it under the wire, they fixed it and sent it back in one week! If you got it for x-mas '06 I'm pretty sure it's too late but you can always try. If you go to the store where it was bought they may be willing to whip you up a receipt. If it was bought on-line they probably won't fudge the date for you. Good luck.
You know, I've been worrying about this because I've since heard others mention this problem. It's probably bound to recur. I wonder how hard it would be to rebuild/rehouse it with better switches.