Sebastien, aren't panel applets part of the session that is being saved with respect to the "Ask on logout" option? I'm quite certain in the older versions of GNOME, panel configuration was not preserved unless this option was checked. I thought this bug sounded quite related as if the bogus panel applets were removed for the current session, but then not made permanent for the next session. Maybe I just misunderstood the original post.
Regardless, I have resubmitted the bug as #46856. -- Options in system > preferences > sessions, various little problems https://launchpad.net/bugs/6687 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
