--- packaging_impl.py	2010-04-19 10:56:39.000000000 +0200
+++ /root/packaging_impl.py	2011-10-03 12:29:43.333774770 +0200
@@ -130,12 +130,13 @@
 
         native_origins = [this_os]
         try:
-            for f in os.listdir('/etc/apport/native-origins.d'):
-                for line in open(f):
-                    line = line.strip()
-                    if line:
-                        native_origins.append(line)
-        except OSError:
+            for filename in os.listdir('/etc/apport/native-origins.d'):
+                with open(os.path.join('/etc/apport/native-origins.d', filename)) as file:
+                    for line in file:
+                        line = line.strip()
+                        if line:
+                            native_origins.append(line)
+        except (OSError, IOError):
             pass
 
         origins = None