I looked and there was no update-notifier installed. I used Synaptic and installed it.
I thought this was supposed to be a standard utility to insure that the system was up to date but I have only used Ubuntu before, not Xubuntu. Maybe Xubuntu does not include this app by default? -- no updates shown in system tray on xubuntu https://launchpad.net/bugs/89263 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
