Firstly, make sure that you update to Karmic RC or newer. This should force the removal of rtkit, which is known to spam syslog because Karmic's linux source package lacks a set of necessary patches.
Secondly, please see https://wiki.ubuntu.com/PulseAudio/Log -- Applications becoming disconnected from pulseaudio https://bugs.launchpad.net/bugs/452866 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
