I've just released Infinispan 4.2.1.CR1. After some excellent feedback from the Infinispan community on 4.2.0.FINAL, we've fixed 18 bugs including making hash distribution better, squashing a memory leak, a potential stale lock scenario and making remote lookups faster. Thanks for all the extensive feedback, and please do keep this coming. I hope to cut 4.2.1.FINAL very soon so please try this release candidate out and report back.
As per usual, grab the download, read the Javadocs, and report any issues via the user forums.