Index: C:/xampp/htdocs/wordpress_trunk/wp-includes/wp-db.php
===================================================================
--- C:/xampp/htdocs/wordpress_trunk/wp-includes/wp-db.php	(revision 8303)
+++ C:/xampp/htdocs/wordpress_trunk/wp-includes/wp-db.php	(working copy)
@@ -685,7 +685,8 @@
 				$wheres[] = "$c = '" . $this->escape( $v ) . "'";
 		else
 			return false;
-		return $this->query( "UPDATE $table SET " . implode( ', ', $bits ) . ' WHERE ' . implode( ' AND ', $wheres ) . ' LIMIT 1' );
+			
+		return $this->query( "UPDATE $table SET " . implode( ', ', $bits ) . ' WHERE ' . implode( ' AND ', $wheres ) );
 	}
 
 	/**