I recently switched from a windows mobile device which worked almost flawlessly. Now I have a bold and setup the 6 email accounts that I monitor as IMAP4 accounts to be synced with the server. Invariably while I'm at work and have Thunderbird up to deal with my emails, when I delete them via Thunderbird, they don't disappear in sync on my Bold. I think this is pretty lame for a device that is supposed to be "the gold standard" of email devices.