Remove home folder after log off

I have Snow Leopard Server with Open Directory, Snow Leopard, Leopard, and Tiger client bond to the server, I configured mobile users.

Snow Leopard and Leopard client successfully clear (remove) home folders after log off, but Tiger clients keep home folders on the computer.
This is weird, I need to force Tiger clients to remove home folders from the computer after syncing and log off.

Can you help me