I think i figured out the way to solve it. Change the hinting options from middle to low for example in the Preferences-Appearance-Fonts- Advanced. This also makes the fonts in Firefox look a lot better!
-- Thunderbird from the repos looks ugly https://bugs.launchpad.net/bugs/224810 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