I upgraded to fedora 20 from fedora 19 using fedup. Everything went well except for some weird issues with Thunderbird. The latter is now giving me a pile of weird permission errors and disk space errors. There is 250GB free space, so I know that is not the problem. Obviously this has something to do with the permissions on the thunderbird folder, but I do not have the knowledge to rectify the problem.
Please suggest how to proceed?