Netatalk?
 

Having a slight issue with netatalk. Works fine when connecting to using OS 9. But if connecting to using OS X Jaguar it is extremelu slow to write to the share. i.e. 35 minutes to transfer a 3MB file. Any ideas on why this may be happening?

I'd use something else; OSX being BSD-based, you have the option of FTP, SFTP via SSH, and even Samba if enabled on both machines.