As mosses wrote, uninstalling the manually installed xpi file and installing the "lightning-extension" package solved this problem for me! Even *with* the Google Provider installed and enabled!
So I can consider this issue "closed" as well. Thanks for the quick help. -- After upgrading to Ubuntu 9.04, I cannot create any new calendar https://bugs.launchpad.net/bugs/372230 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