cannot add applets to gnome-panel

This is on AMD64. Upgraded to feisty today (21-Jan). I cannot add some applets to the gnome-panel. The error I get is:

** (gnome-panel:14287): WARNING **: panel-applet-frame.c:1267: failed to load applet OAFIID:GNOME_GWeatherApplet:
Failed to resolve, or extend '!prefs_key=/apps/panel/applets/applet_3/prefs;background=none:;orient=down;size=x-small;locked_down=false

** (gnome-panel:14287): WARNING **: panel-applet-frame.c:1267: failed to load applet OAFIID:GNOME_Panel_TrashApplet:
Failed to resolve, or extend '!prefs_key=/apps/panel/applets/applet_5/prefs;background=none:;orient=down;size=x-small;locked_down=false

I have no idea how to proceed :(