I have the same problem. But I think it's some kind of frequency problem, because at work we have several apple products used via Bluetooth, but I'm the only one with that problem. My magic trackpad is not sliding smoothly through the screen, it's more like jumping and somtimes to a totally different side I'm moving it to. And- it does 1click and double-click on its own will. That is really hard to work with. I tried different track pads, same result, i tried other bluetooth devices like a magic mouse.- Wired: No problems. I reinstalled the bluetooth drivers. First it looked nice, but that didn't stay like that for long. I also tried to change batteries, restarting device and so on, all that "could be" things. But: problem still unresolved.
Would be really great if s.o. knows what to do. That problem is making me crazy.
Thanks,