--- /usr/bin/startx.ori	2006-09-19 12:13:58.484080480 +0200
+++ /usr/bin/startx	2006-09-19 12:14:09.008480528 +0200
@@ -118,7 +118,7 @@
 # server man need it. Add them to the '$xserverauthfile' instead.
 for displayname in $authdisplay $hostname$authdisplay; do
      authcookie=`xauth list "$displayname" \
-       | sed -n "s/.*$displayname[[:space:]*].*[[:space:]*]//p"` 2>/dev/null;
+       | grep XDM | sed -n "s/.*$displayname[[:space:]*].*[[:space:]*]//p"` 2>/dev/null;
     if [ "z${authcookie}" = "z" ] ; then
         xauth -q << EOF
 add $displayname . $mcookie