Index: MemcachedClient.php
===================================================================
--- MemcachedClient.php	(revision 93132)
+++ MemcachedClient.php	(working copy)
@@ -959,6 +959,8 @@
 			$this->stats[$cmd] = 1;
 		}
 
+		if ($exp > 2592000 and $exp < 1000000000) $exp = 2592000;
+
 		$flags = 0;
 
 		if ( !is_scalar( $val ) ) {