Gutsy Gibbon (aka Ubuntu 7.10) is available. I already upgraded my home server to this new release and everything works as expected.
The only annoyance I encountered was the fact that after the upgrade my Windows laptop was no longer able to connect to password protected Samba shares. Rebooting the Windows machine solved the problem so I guess it really was a Windows issue.
The main reason for upgrading my server is Gutsy Gibbon's support for ViewVC. Using ViewVC you can browse directories, commit logs, and specific revisions of files in a Subversion repository.