[miamicanes]

I had the same problem (and came within milliseconds of smashing my Touch in rage after a few of them, including the time it insidiously called someone and left a 40+ minute voicemail message for them after something caused it to wake up while in my pocket).

The only workaround I've found is S2U2. It's not perfect, and causes some issues of its own (partly because it has dozens of options whose consequences and interactions aren't particularly obvious, or even documented beyond random postings in 200+ page threads), but it DID fix the problem well enough to make the phone semi-tolerable.