I am also experiencing this bug with TB 17.0 on Linux Mint Debian Edition with an XFCE 4.8 desktop.
What I have found is that CPU usage tends towards 100% on one core when displaying the contents of a message in the Message Pane (use F8 to switch view). When the Message Pane is empty or not visible it does not happen. The behaviour happens both with IMAP and POP3 accounts and both with text and HTML messages. There is no evidence whatsoever that earlier suggested indexing or encryption mechanisms have anything to do with it. Workaround: Do not use the Message Pane. Use F8 to switch it off. I have also reported these findings in the upstream bug report: https://bugzilla.mozilla.org/show_bug.cgi?id=794401 ** Bug watch added: Mozilla Bugzilla #794401 https://bugzilla.mozilla.org/show_bug.cgi?id=794401 -- 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/927515 Title: Thunderbird stuck at 100% CPU Status in The Ubuntu Power Consumption Project: New Status in “thunderbird” package in Ubuntu: Confirmed Bug description: Just received the automatic update last night. Ever since, thunderbird is using 20-50% CPU constantly, according to top. Turned off global search and indexing to no avail. This is really bad for me as it's driving up the temperature of my laptop, runs up the fan noise and reduces battery time. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: thunderbird 10.0+build1-0ubuntu0.11.10.1 ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17 Uname: Linux 3.0.0-16-generic x86_64 ApportVersion: 1.23-0ubuntu4 Architecture: amd64 BuildID: 20120129183038 Date: Mon Feb 6 10:44:55 2012 EcryptfsInUse: Yes ProcEnviron: LANGUAGE=nl_NL:nl:en PATH=(custom, user) LANG=nl_NL.UTF-8 SHELL=/bin/bash Profile0Extensions: extensions.sqlite corrupt or missing Profile0Locales: extensions.sqlite corrupt or missing Profile0Plugins: pluginreg.dat isn't available Profile0Themes: extensions.sqlite corrupt or missing Profiles: Profile0 - LastVersion=3.0.6/20100713193322 (Out of date) Profile1 (Default) - LastVersion=10.0/20120129183038 (Running) SourcePackage: thunderbird UpgradeStatus: Upgraded to oneiric on 2012-02-02 (4 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-consumption/+bug/927515/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
