As far as I am concerned the bug is gone in Edgy: cups-1.2.4-2ubuntu3 for both client and server works as expected without the "RAW- workaround".
-- client 1.2.0 to 1.1.2x server over IPP: Only RAW printing works https://launchpad.net/bugs/45099 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs