--- xdg-su~	2012-02-17 09:33:01.000000000 +0400
+++ xdg-su	2012-03-07 01:29:04.492809901 +0400
@@ -300,7 +300,6 @@ detectDE()
 {
     if [ x"$KDE_FULL_SESSION" = x"true" ]; then DE=kde;
     elif [ x"$GNOME_DESKTOP_SESSION_ID" != x"" ]; then DE=gnome;
-    elif xprop -root _DT_SAVE_MODE | grep ' = \"xfce4\"$' >/dev/null 2>&1; then DE=xfce;
     fi
 }
 
@@ -357,6 +356,21 @@ su_gnome()
 
 su_generic()
 {
+    XSU=`which gksu 2>/dev/null`
+    if [ $? -eq 0 ] ; then
+        if [ -z "$user" ] ; then
+            $XSU -l "$cmd"
+        else
+            $XSU -l -u "$user" "$cmd"
+        fi
+
+        if [ $? -eq 0 ]; then
+            exit_success
+        else
+            exit_failure_operation_failed
+        fi
+    fi
+
     if [ -z "$user" ] ; then
         xterm -geom 60x5 -T "xdg-su: $cmd" -e su -c "$cmd"
     else
@@ -412,7 +426,7 @@ fi
 detectDE
 
 if [ x"$DE" = x"" ]; then
-    XSU=`which xsu 2>/dev/null`
+    XSU=`which gksu 2>/dev/null`
     if [ $? -eq 0 ] ; then
         DE=generic
     fi