In recent weeks, I've had to I'll notice that my HTC Hero has stopped syncing Exchnage Active Sync email. I see that in the top left hand corner of the Hero is the sync icon with an exclamation mark. From that point forward, there's nothing I can do to correct the problem other than to delete EAS from the Hero and then re-setup. Once that's done, everything seems fine. This has happened to me three time in the past, twice in the last three or four days. I have a Sprint Hero and use Exchange Active Sync with my company's computer.