Comment 21 for bug 36272

I've done some work tracing this down. You can see my comments on
bugzilla.gnome.org for details. The short version is that it seems like this is
mostly upstream's fault, but the actual bug(s) are only exposed because Dapper
seems to ship a file called '/etc/xdg/menus/debian-menu.menu' which points to
the (currently) non-existent '/var/lib/menu-xdg/menus/debian-menu.menu'.
Removing the symlink should get your system working nicely again (without
resorting to killing daemons or weird gamin config hacks).

It's probably kinda silly to ship a file which symlinks to nowhere by default. I
have no idea what the intention here was though (or what the best fix is), I'll
leave the final resolution on that to the gnome packaging team.