With the release of Fedora 13 about a week ago, I decided that my Fedora 11 workstation was getting a little long in the tooth and was due for an upgrade (not to mention the fact that Fedora 11 will go End-Of-Life [EOL] in about 2 weeks.).

I have a separate /home parition so I wasn't too worried about losing stuff, but I opted for an upgrade instead of a clean install. I backed up /etc just in case and dropped to runlevel 3 and ran the preupgrade-cli client that Fedora provides for upgrading. That process ran smoothly and it prompted me to reboot to being the upgrade.

A friend of mine uses Samba and winbind on his CentOS Linux boxes for user and group information and Kerberos for authentication. He upgraded his domain controllers recently to Windows Server 2008 R2 and suddenly his winbind authentication broke.