Index: modules/user/user.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.module,v
retrieving revision 1.1126
diff -u -F '^f' -p -r1.1126 user.module
--- modules/user/user.module	17 Feb 2010 08:54:51 -0000	1.1126
+++ modules/user/user.module	20 Feb 2010 22:51:02 -0000
@@ -1306,7 +1306,7 @@ function user_block_view($delta = '') {
         // rather than u.access because it is much faster.
         $authenticated_count = db_query("SELECT COUNT(DISTINCT s.uid) FROM {sessions} s WHERE s.timestamp >= :timestamp AND s.uid > 0", array(':timestamp' => $interval))->fetchField();
 
-        $output = format_plural($authenticated_count, 'There is currently 1 user online.', 'There are currently @count users online.');
+        $output = '<p>' . format_plural($authenticated_count, 'There is currently 1 user online.', 'There are currently @count users online.') . '</p>';
 
         // Display a list of currently online users.
         $max_users = variable_get('user_block_max_list_count', 10);