I had the same problem (Ubuntu 12.10). I installed synaptic from Ubuntu software center and it has this problem. I removed it and then I installed it from terminal. Now it's working properly.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1068988 Title: Synaptic runs without administrative privileges when run from the launcher To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/1068988/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs