On 9 Jan 2012, at 10:56, Mircea Markus wrote:

Default transaction enlistment is now Synchronisation (vs XAResource).

No it's not - I haven't submitted that pull request yet.  The work is in my topic branch

https://github.com/maniksurtani/infinispan/tree/t_1284

but I have concerns around this, hence the email thread on synchronisations and rollbacks.