Emails have started coming as multiples, as many as 9 of the same message; at first they appear singly, 10-20 mins mutiples of the same message appear.
Thunderbird emails started to come in mutiples of same message; at first singly, but a little later they mutiply, as many as 9 of each, but number varies from 9 to 3. Annoying and it's a pain deleting. I have Ubuntu 14.04, had problem some weeks now, maybe due to some software update? It affects all my inbox messages. Many thanks for any help.