Yeah, I especially like it when I'm in the middle of a long email and some sort of click with my palm happens and it deletes most of what I've been typing. Just happened to me today. Be nice if there was a way to totally deactivate the trackpad if you were using a mouse or something.

So, just to give you data on the other side of the curve: the very large trackpads are basically the only reason left (keyboard now sucks, magsafe is gone) for me to use a MacBook Pro.

Should I in the future revert to Linux as a day-to-day driver, it would probably be conditioned on similar-level support for the (even larger :-D) Magic Trackpad peripheral.

So I guess this is one of these things where YMMV

Edit: FWIW I'm a touch typist with relatively small hands. Maybe this has to do with it. I cannot remember accidentally triggering the trackpad ever since... I can't remember the last time, it's been at least half a decade.