Index: modules/user/views_plugin_argument_default_user.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/views/modules/user/views_plugin_argument_default_user.inc,v
retrieving revision 1.1.2.2
diff -u -p -r1.1.2.2 views_plugin_argument_default_user.inc
--- modules/user/views_plugin_argument_default_user.inc	14 Dec 2010 00:00:55 -0000	1.1.2.2
+++ modules/user/views_plugin_argument_default_user.inc	19 Dec 2010 22:34:47 -0000
@@ -66,6 +66,13 @@ class views_plugin_argument_default_user
         }
       }
     }
+
+    // If the current page is a view that takes uid as an argument, return the uid.
+    $views_page = views_get_page_view();
+
+    if ($views_page && isset($views_page->view->argument['uid'])) {
+      return $views_page->view->argument['uid']->argument;
+    }
   }
 }