Index: search.php
===================================================================
--- search.php	(revision 1316)
+++ search.php	(working copy)
@@ -397,6 +397,11 @@
 	$pagination->total = $search['resultcount'];
 	$pagination->split_pages();
 	
+	if (!$search['ids'])
+	{
+		$message->error(_('No bugs matched your search criteria. Please <a href="search.php?new=1">try again</a> with different search requirements.'));
+	}
+	
 	$search = $db->query("SELECT * FROM " . TABLE_PREFIX . "bug WHERE bugid IN ($search[ids]) $search[orderby] LIMIT " . $pagination->fetch_limit($pagination->page - 1) . ", " . $pagination->perpage);
 	while ($bug = $db->fetch_array($search))
 	{