I'm experiencing the exact same problem. My account resides in an external LDAP-directory.
polkit-agent-helper-1: error response to PolicyKit daemon: Remote Exception invoking org.freedesktop.PolicyKit1.Authority.AuthenticationAgentResponse() on /org/freedesktop/PolicyKit1/Authority at name org.freedesktop.PolicyKit1: org.freedesktop.PolicyKit1.Error.Failed: Only uid 0 may invoke this method. This incident has been logged.
I too, have just upgraded from 9.04 to 9.10 today.
I'm experiencing the exact same problem. My account resides in an external LDAP-directory.
polkit- agent-helper- 1: error response to PolicyKit daemon: Remote Exception invoking org.freedesktop .PolicyKit1. Authority. AuthenticationA gentResponse( ) on /org/freedeskto p/PolicyKit1/ Authority at name org.freedesktop .PolicyKit1: org.freedesktop .PolicyKit1. Error.Failed: Only uid 0 may invoke this method. This incident has been logged.
I too, have just upgraded from 9.04 to 9.10 today.