panel empty on startup for me too

[md@Linux.IT (Marco d'Itri)]

I have been experiencing exactly the same problem since about a couple
of week. I think this started after I upgraded some apparently unrelated
package (I do not know which ones, sorry).
Please let me know what I can to to help debugging this.
I see this in ~/.xsession-errors, but I don't know if it's related:

** (gnome-panel:6335): WARNING **: No toplevel on which to load object '00000001'


** (gnome-panel:6335): WARNING **: No toplevel on which to load object '00000002'


** (gnome-panel:6335): WARNING **: No toplevel on which to load object '00000003'


** (gnome-panel:6335): WARNING **: No toplevel on which to load object '00000004'


-- 
ciao,
Marco