This would happen if you created the user mumble-server for your own. What says "getent passwd|grep ^mumble-server"?
-- mumble-server install https://bugs.launchpad.net/bugs/289773 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
