From what i can see it appears everyone who updated in time is on the same chain.
I updated Cryptsy on April 2nd but failed to update altexplorer.info at the same time.
Redownload of altexplorer.info got me on the same chain as cryptsy and altexplorer.net
Looks like hashfaster and coinchoose did not update in time I take it?
we get d8ef6acf1da476ea6ea53050a5355e9f7fc35f0918862df66b85aed8c6438649 for that block
Given this deposits/withdrawals have been enabled at cryptsy again