While I haven't had the "read-to-unread" issue, I have been plagued with the drafts and re-sent messages. When I log in, it will tell me "So-and-so message can not be sent using that outgoing server" and it tries to send out messages that I *received*, not wrote myself. It was trying to send the Apple MacBook advertisement email *back* to Apple yesterday when I logged in. It's driving me nuts...😡 😱
EDIT: This has been happening to me for about 3ish months now...I've resorted to checking my mail accounts on the web...that's how bad it is. 🙁