I confirm, it's still the case on edgy (up to date on 25 sept 06). On dapper I didn't have this problem.
PS : on Inspiron 6000 -- Master volume does not work when headphones are connected. https://launchpad.net/bugs/26150 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs