If this is a policykit issue, could it be related to https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/1021410? It may be a coincidence, but I just updated to Quantal and started seeing both problems.
If this is a policykit issue, could it be related to https:/ /bugs.launchpad .net/ubuntu/ +source/ policykit- 1/+bug/ 1021410? It may be a coincidence, but I just updated to Quantal and started seeing both problems.