xfce4 and xorg-7.5

[Warren Block]

I've upgraded three computers to xorg 7.5 so far, all three with xfce4 
and 8-stable.  Only one has an unexpected weirdness with dbus and xfce.

This error happens every time on the first startx after boot, and about
half the time startx is tried after that:

   process 1256: arguments to dbus_message_new_signal() were incorrect, assertion "_dbus_check_is_valid_path (path)" failed in file dbus-message.c line 1165.
   This is normally a bug in some application using the D-Bus library.
     D-Bus not compiled with backtrace support so unable to print a backtrace

X starts, the xfce4 screen is visible with the mouse pointer, then it 
immediately exits.  Happens with startx, startxfce4 in .xinitrc or just 
from the command line.

twm runs every time without problems.

Log and config files here:

http://www.wonkity.com/~wblock/xfce-xorg/

-Warren Block * Rapid City, South Dakota USA