I installed a fresh sarge i386 system from netinst image I burned from
cdimage.debian.org today and I too experienced this bug when logging
into gnome after choosing "desktop system" in tasksel. I am _not_
using xorg. I am using official sarge sources.
deb http://techweb.rfa.org/debian/ stable main
I had this problem of errors that panel applets Show Desktop, Window
List, and Workspace Switcher all died unexpectedly on login, but they
run fine when restarted.
gnome-panel 2.8.3-1
killall gnome-panel causes it to be restarted by the session manager
without recreating the problem, but it happens every time on login. I
have no idea about the cause nor do I have the time at the moment to
think about where to begin tracking it down since its hard to trace
when it only screws up when logging in.

