Interesting. I get mail addressed to people with GMail addresses that are similar to mine (gaustin vs. g.austin). I sometimes wonder if other people get emails addressed to me...
It could be because G. Austin is a fairly common first initial and last name. I'm pwelch@gmail.com and every damn P. Welch in the world thinks they have my email address.
Not what the OP was complaining about but the big issue I've run into is that large threads bring it to an absolute crawl. Get over a couple of hundred messages in a thread and it gets slow; at around 800 or so it'd take several seconds to load a thread and would cause the phone to hang entirely on occasion. This is on a G2, so it's not like the hardware's underpowered.
The only thing I can figure is that it loads the entire thread into memory when it's opened rather than just displaying what's visible. Fairly annoying either way.
http://code.google.com/p/android/issues/detail?id=9392
http://www.engadget.com/2010/12/31/android-still-has-horribl...
http://www.bgr.com/2010/12/31/android-bug-that-sends-sms-mes...