I believe I found the problem. The ownership on /var/lib/PolicyKit was, for some unknown reason, root:avahi. I changed it to root:polkituser, and all appears to be well - no ck-launch-session needed. I'm not sure how the directory ownership got messed up, but it's likely to have been my fault.
I would mark this bug closed, but that does not appear to be an option. Please dispose of it as you see fit, and thank you for your assistance. -- cannot mount USB thumb drive as normal user https://bugs.launchpad.net/bugs/342940 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
