Sorry, I have found the problem. Thunderbird was not idle, it was downloading a large imap account since 15 days :) I close this bug.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1804501 Title: Thunderbird permanetly consume between 50% and 100% of one proc when idle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1804501/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
