Comment 14 for bug 49594

I experienced a problem that looks related to your report. When starting a gnome session for the second time, the gnome-panel fails to load several applets. Instead, I'm getting a error message for each applet. I tried deleting .gnome, .gnome2, .gconf, .gconfd and killing gconfd-2, but only a complete reboot fixed the panel applets. When gracefully logging out from the gnome desktop or just killing X, the problem occurs on the next session again.

Recently I discovered the bonobo-activation-server running in the background. After killing this service, the broken panel loads just fine again.

I assume this is the same kind of bug, although the problem arises in a different way.