diff -up expendable-0.0.9/main.py.save expendable-0.0.9/main.py
--- expendable-0.0.9/main.py.save	2008-11-15 10:28:02.000000000 +0000
+++ expendable-0.0.9/main.py	2010-01-06 17:52:49.800284933 +0000
@@ -2,7 +2,7 @@
 
 ## expendable
 
-## Copyright (C) 2008 Tim Waugh <twaugh@redhat.com>
+## Copyright (C) 2008, 2010 Tim Waugh <twaugh@redhat.com>
 
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -923,7 +923,7 @@ class Main:
                        gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
                        gtk.STOCK_SAVE, gtk.RESPONSE_YES)
         filename = self.xmlfile.get_filename ()
-        requires_filename = (filename == None)
+        requires_filename = (filename == None or self.xmlfile.is_readonly ())
         if requires_filename:
             filename = _("Untitled")
         m.set_markup ('<span size="larger" weight="bold">' +
@@ -938,7 +938,10 @@ class Main:
                 response = self.file_chooser_dialog.run ()
                 self.file_save_as_response (self.file_chooser_dialog, response)
             else:
-                self.xmlfile.save ()
+                self.file_save (None)
+
+            if self.check_if_changes_made ():
+                response = gtk.RESPONSE_CANCEL
 
         return response