[Bug 1074260]

[Florian Effenberger]

I'm sorry to say, but for me it got *MUCH* worse with 17.0 now.
Several times, messages are redownloaded, and when that's done, the activity window shows nothing, but Thunderbird still consumes 100% CPU power.

I deleted my whole ImapMail folder, to no avail.

I'll try to get some debug information soon and open a new bug, because
it's really unusable for me now. :(

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https://bugs.launchpad.net/bugs/1074260

Title:
  Thunderbird heavy IMAP traffic downloading messages

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