(This is for version 0.6.3, there isnt an option listed on bugzilla)

If the gnome panel dies, rhythmbox segfaults the next time a song is played. 

To reproduce:

1. have a panel running (you probably need a notification area to make the
tray icon appear)
2. open rhythmbox
3. kill the panel process 
4. select a song and hit play. rhythmbox segfaults.

It also prints these warnings:

These appear when the panel dies:

(rhythmbox:2427): Gdk-WARNING **: GdkWindow 0x1400028 unexpectedly destroyed

(rhythmbox:2427): Gdk-WARNING **: GdkWindow 0x1400026 unexpectedly destroyed

(rhythmbox:2427): Gdk-WARNING **: GdkWindow 0x1400025 unexpectedly destroyed

(rhythmbox:2427): Gdk-WARNING **: GdkWindow 0x1400023 unexpectedly destroyed

This sometimes appears just before it crashes, but not always:

(rhythmbox:2427): GLib-GObject-WARNING **: invalid uninstantiatable type
`(null)' in cast to `GtkWidget'