diff -Nru python-apt-0.7.4ubuntu7.1/aptsources/distinfo.py python-apt-0.7.4ubuntu7.2/aptsources/distinfo.py
--- python-apt-0.7.4ubuntu7.1/aptsources/distinfo.py	2008-05-28 12:09:29.000000000 +0200
+++ python-apt-0.7.4ubuntu7.2/aptsources/distinfo.py	2008-07-09 02:05:05.000000000 +0200
@@ -192,7 +192,7 @@
                 template.base_uri = value
             elif field == 'BaseURI-%s' % self.arch:
                 template.base_uri = value
-            elif field == 'MatchURI' and not template.match_uri:
+            elif field == 'MatchURI' and (re.search('security\.ubuntu\.com',value) or not template.match_uri):
                 template.match_uri = value
             elif field == 'MatchURI-%s' % self.arch:
                 template.match_uri = value
diff -Nru python-apt-0.7.4ubuntu7.1/debian/changelog python-apt-0.7.4ubuntu7.2/debian/changelog
--- python-apt-0.7.4ubuntu7.1/debian/changelog	2008-05-28 12:42:25.000000000 +0200
+++ python-apt-0.7.4ubuntu7.2/debian/changelog	2008-07-09 02:06:46.000000000 +0200
@@ -1,3 +1,9 @@
+python-apt (0.7.4ubuntu7.2) hardy; urgency=low
+
+  * Added check for 'security\.ubuntu\.com' in MatchURI value (LP: #244093)
+
+ -- Savvas Radevic <vicedar@gmail.com>  Wed, 09 Jul 2008 02:05:46 +0200
+
 python-apt (0.7.4ubuntu7.1) hardy-proposed; urgency=low
 
   * aptsources/distinfo.py: