Index: trunk/kernel/include/item.php
===================================================================
diff -u -r3260 -r3261
--- trunk/kernel/include/item.php	(.../item.php)	(revision 3260)
+++ trunk/kernel/include/item.php	(.../item.php)	(revision 3261)
@@ -1128,11 +1128,13 @@
 		$db =& GetADODBConnection();
 
 		$sql = 'SELECT '.$this->IdField().' FROM '.$this->tablename.' WHERE Filename = '.$db->qstr($filename);
-		$found_item_id = $db->GetOne($sql);
+		$found_item_ids = $db->GetCol($sql);
 		$has_page = preg_match('/(.*)_([\d]+)([a-z]*)$/', $filename, $rets);
-		if( ($found_item_id != $this->UniqueId()) || $has_page ) // other category has same filename as ours OR we have filename, that ends with _number
+		
+		$duplicates_found = (count($found_item_ids) > 1);
+		if ($duplicates_found || $has_page) // other category has same filename as ours OR we have filename, that ends with _number
 		{
-			$append = $found_item_id ? 'a' : '';
+			$append = $duplicates_found ? 'a' : '';
 			if($has_page)
 			{
 				$filename = $rets[1].'_'.$rets[2];