When using sticky session load balancing using apache and mod_jk and the session id includes jvmRoute, but on tomcat failover - when a session is served by another tomcat - the session id is not updated with the jvmRoute of the current/new tomcat.

This was reported by Len on the mailing list: http://groups.google.com/group/memcached-session-manager/t/9acbd9b91ad9f08c

Fixed.