Looks like Node and Cache have void returns for put(key, value) instead of the returning the previous value. I'm going to assume that was inadvertent and restore the old behavior; please let me know if I'm wrong. Brian Stansberry Lead, AS Clustering JBoss, a division of Red Hat Ph: 510-396-3864 skype: bstansberry IT executives: Red Hat still #1 for value http://www.redhat.com/promo/vendor/