FWIW I just switched to 17.0b3 and it's working fine for me. I already repaired all my folders when I moved to the 19 nightly to test the fix.
Also, as an Ubuntu user I found this very helpful: https://launchpad.net/~mozillateam/+archive/thunderbird-next I'm still starting tbird on the command line to make sure that there are no problems, and I see this error periodically: autosyncActivities ERROR OnDownloadError: Folder of Account When I saw that error with 16 it always heralded another round of repetitive downloading, however with the fixed versions it seems to simply be an indicator that the folder is out of synch on my local system, and once it gets updated it seems to stay that way. I use both a laptop and a desktop to access the same mail accounts, so it's expected that the folders on one or the other will be out of synch if I downloaded mail in that folder to the other system already. hth, Doug -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1074260 Title: Thunderbird heavy IMAP traffic downloading messages Status in Mozilla Thunderbird Mail and News: Fix Released Status in “thunderbird” package in Ubuntu: Confirmed Bug description: Thunderbird (as of version 16?) generates a lot of IMAP traffic, continually redownloading messages. One issue has been resolved (see https://bugzilla.mozilla.org/show_bug.cgi?id=803843 and https://launchpad.net/bugs/1068921 ) but this issue remains. It is open in bugzilla as https://bugzilla.mozilla.org/show_bug.cgi?id=806760 To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1074260/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp