I've been happily using the iPod Touch for a couple of months - no worries. installed the 2.0 upgrade, no worries. Then today, out of the clear blue sky, I can't send emails. I keep getting a error message to the effect that "one of the recipients addresses was invalid." I know for a fact the email addresses aren't incorrect - so I'm in a quandary. I've done a Reset - that's a pain. Even deleted and reinstalled the email account. Ideas?? --- UPDATE - did a complete restore of the Touch and now it seems to work. Must have gotten a corrupted file in the Mail application.