Of the update-notifier versions published in oneiric (see https://launchpad.net/ubuntu/oneiric/+source/update-notifier), 0.112ubuntu2 is the last that properly shows a tray icon; 0.115ubuntu1 and later all fail.
Of the update-notifier versions published in oneiric (see https:/ /launchpad. net/ubuntu/ oneiric/ +source/ update- notifier), 0.112ubuntu2 is the last that properly shows a tray icon; 0.115ubuntu1 and later all fail.