In our own experience MySQL 5.6 has been awful. We don't think it's ready for the big time yet. They have a big problem in their CREATE INDEX implementation - it is painfully slow. This is why Aware IM has all sorts of problems with it as it creates a lot of indexes when a BSV is published.
Exactly the same Aware IM version works without a glitch in MySQL 5.5
We recommend not to upgrade to MySQL 5.6 until they release a patch for this.