Well, technically it does support merged mining but you cannot set a custom payout address for Namecoin yet (the getmemorypool coinbasing has to be implemented for that). Like this, the share processing scripts on ozcoin's main server would not be able to detect Namecoin blocks, because they depend on polling the local namecoind for generate transactions.

It all has to do with the multi-server setup of ozcoin, something that other pools usually don't have. If you run ecoinpool on a single site, merged mining is working fine.

PS: Thanks to all the ozcoin staff for supporting me and helping to set this up. This is the first real test in the Bitcoin world for ecoinpool.