Coinium, GeekHash, and many of the P2Pool nodes are up to date.

Cryptsy:  As reported earlier, they are still trading CAT, but they have stopped deposits/withdrawals until they update the code.  I have informed them that the code's available and they have responded to the support ticket - but there is no indication that they have completed the update and my test deposits are still in limbo.

We have also informed the other pools and exchanges but have not received a response from them.

If you are going to mine, check the pool's block information and cross-check it with the info found on http://www.catstat.info/ - this always reports the current block.

Andy