Mail 4.5 Getting same Messages again and again
Just upgraded to Mail 4.5. The program now retrieves the same Email messages even though it has already downloaded them previously. Everything that's on the mail server gets brought to my inbox every time it checks mail.
My request for help is two-fold:
1) How do I stop the repeated downloading?, and
2) How would I delete about 12,000 repeated messages now without having to select them one at a time?
Happy Thanksgiving and thank you for your help.
iMac, Mac OS X (10.6.8), New Mail 4.5, repeat multiple Email