Multipool is currently down, so I haven't been able to review the problem and proposed fix.

He's put the code on Github, so someone else set up a server here: http://multiclone.us.to:18080/ (mining port 18337).
It has the same problem.

http://forum.bitcoin.org/index.php?topic=17970.msg302834#msg302834

Do these comments mean this project doesn't work with Multiclone.us.to ? Because otherwise, this looks awesome.