I have been unable to reproduce the bug since. I think the issue may have occurred due to an update installing in a dependant package while I was using Thunderbird. The update installed was in the package tzdata, from version 2007b-0ubuntu1 to 2007e-0ubuntu0.7.04.
I'm not sure if this should count as a bug in Thunderbird, perhaps there is something the installer or tzdata should have done differently? -- Regresion: Plain text messages do not display until the expander next to 'subject' is used https://bugs.launchpad.net/bugs/109551 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs