Synaptic and Update Manager will only start from the command line

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http://askubuntu.com – This problem was manifest before upgrading to 12.10. I thought I'd wait and see if the upgrade helped, but it didn't. The problem is that if I try and start the Update Manager or Synaptic from the Applications menu in the Gnome Panel, they don't start. I get no error messages, no warnings, nothing. If I open the System Monitor, it looks like the processes don't even start. However, if I open a command terminal and run sudo synaptic or sudo update-manager, they run fine. It's kind of annoying, so how do I get the progams to start normally from the drop down menus? I'm using Gnome Ultimate ( (HowTos)