You have to change the backport diff, not the feisty diff... Also, you should change the data dependency for client and server. Last point: use ${Source-Version} instead of 2.2.3-1~edgy1 to kill the error source.
I attached a fixed fix. ** Attachment added: "fixed fix diff, with proper dependencies" http://librarian.launchpad.net/7099808/nexuiz_2.2.3-1%7Eedgy1.diff.gz -- Can't upgrade nexuiz from edgy-backports https://launchpad.net/bugs/95002 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs