Comment 17 for bug 33861

I'm running Feisty, updated from edgy and dapper before that.
The directory /etc/apt/sources.list.d was empty but readable by all. /etc/apt/sources.list was 600 root.root.
adept_notifier was always mentioning 1 package upgradeable until I changed the permissions of sources.list to 644.

Since changing the permissions the adept-notifier icon disappeared from the system tray even though the process is running.
killall adept_notifier && adept_notifier made the icon appear again, clicked on it and it was gone again. I don't think this is the expected behavior.

So consider this confirmed for feisty, at least with this upgrade path.