Comment 10 for bug 82451

It seems to happen when trackerd is not yet ready to accept requests yet (I think it's validating its index), but deskbar initializes its tracker bits.

For some reason, this makes it try to start another trackerd (according to my trace), which exits immediately because another trackerd is already running (from /etc/xdg/autostart). This exiting generates an untrapped error in the Python code.

Killing deskbar after login, and then reloading it (trackerd is done validating its cache by then), makes it work.