I have the same problem with 1.5.0.7. It'd be nice if this problem can be fixed somehow. Something that may help: I uninstalled the mozilla- thunderbird package and installed the tar.gz archive (linux i686) on my own. The problem remains after transferring the "old" profile to the "new" profile. So I guess that it's not an Ubuntu specific problem ...
After a few tests, I've found a way to reproduce this strange behavior: 1. Create a new "RSS" account 2. Add a new feed to the root of the RSS account 3. Create a sub folder 4. Move feed to the new sub folder I did this for the PowerShell blog, Mono blog (both moved to "development" folder), and Beryl blog (moved to an "application" folder). Now it's impossible to refresh the RSS feeds. -- Negative count for amount of unread e-mails. https://launchpad.net/bugs/45737 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs