[arch-general] XFCE broken with Gnome 3.8?

[David Rosenstrauch]

I picked up some Gnome package upgrades last night during a pacman 
update, and I haven't been able to log into XFCE ever since.  It gets 
most of the way through the login process, then craps out and falls back 
to the session manager (LXDM).  I'm not even able to see any debug 
information about what's going on.

Anyone have a clue / pointer to a fix / workaround?
Thanks,

DR