have you tried to "compact folder ..." for your sent and inbox folders? (right mouse click -> Compact)
** Changed in: thunderbird (Ubuntu) Assignee: Mozilla Bugs (mozilla-bugs) => (unassigned) Status: Confirmed => Incomplete -- Thunderbird: high CPU while sending email https://bugs.launchpad.net/bugs/109943 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs