diff -p -up gnome-cups-manager-0.33/libgnomecups/gnome-cups-permission.c~ gnome-cups-manager-0.33/libgnomecups/gnome-cups-permission.c
--- gnome-cups-manager-0.33/libgnomecups/gnome-cups-permission.c~	2008-04-02 09:31:24.000000000 +0200
+++ gnome-cups-manager-0.33/libgnomecups/gnome-cups-permission.c	2008-04-02 09:50:51.000000000 +0200
@@ -76,7 +76,7 @@ gnome_cups_spawn (char const *app, int a
 		  gboolean force_admin, GtkWidget *toplevel)
 {
 	static char const *su_app[] = {
-		"gnomesu",
+		"gksu",
 		"--"
 	};
 	char const **args = g_new0 (char const *, argc + G_N_ELEMENTS (su_app) +
@@ -84,13 +84,21 @@ gnome_cups_spawn (char const *app, int a
 	unsigned offset, i = 0;
 	GError *err = NULL;
 
-	if (force_admin && !gnome_cups_can_admin ())
+	if (force_admin && !gnome_cups_can_admin ()) {
 		for (i = 0 ; i < G_N_ELEMENTS (su_app) ; i++)
 			args [i] = (char *)su_app [i];
-	offset = i;
-	app = args [offset++] = gnome_cups_execname (app);
-	for (i = 0 ; i < argc ; i++)
-		args [i + offset] = argv [i];
+ 		offset = i;
+ 		app = gnome_cups_execname (app);
+ 		for (i = 0 ; i < argc ; i++)
+ 			app = (char *)g_strjoin((gchar *)" ", (gchar *)app, (gchar *)argv [i], NULL);
+ 		args [offset++] = app;
+ 	}
+ 	else {
+ 		offset = i;
+ 		app = args [offset++] = gnome_cups_execname (app);
+ 		for (i = 0 ; i < argc ; i++)
+ 			args [i + offset] = argv [i];
+ 	}
 	
 	g_spawn_async (NULL, (char **)args, NULL, G_SPAWN_SEARCH_PATH,
 		       NULL, NULL, NULL, &err);