Why does Thunderbird keeps doubling email messages?
Every so often, Thunderbird will download all of my messages AGAIN, even though they are already in the Inbox of Thunderbird. Then I have to go thru and delete MANUALLY all of the doubles. There can be thousands!
تمام جوابات (1)
Try to delete popstate.dat. http://kb.mozillazine.org/Popstate.dat