Just curious. Lets say I have ehcache version 1.6.2 on one application and 1.7.2 on another... everything else the same, could those two caches talk to each other over RMI replication?
I'll let Greg chime in with his thoughts for an official answer, but I don't know of any automated testing that verifies such a setup so I'm inclined to say even it works it falls outside a "supported/certified" configuration