diff -up xinit-1.0.9/startx.cpp.jx xinit-1.0.9/startx.cpp
--- xinit-1.0.9/startx.cpp.jx	2008-05-21 14:29:51.000000000 -0400
+++ xinit-1.0.9/startx.cpp	2009-05-08 13:46:44.000000000 -0400
@@ -13,6 +13,7 @@ XCOMM Site administrators are STRONGLY u
 XCOMM
 XCOMM $XFree86: xc/programs/xinit/startx.cpp,v 3.16tsi Exp $
 
+unset XDG_SESSION_COOKIE
 unset DBUS_SESSION_BUS_ADDRESS
 unset SESSION_MANAGER