I have installed netatalk 3.0.4 on lubuntu 13.04 and i have this problem:
if i try to save from anyway mac application in a linux folder where is mounted a supplementary disk, the mac freeze.
I followed these installation instructions: http://netatalk.sourceforge.net/wiki/index.php/Install_Netatalk_3.0.4_on_Ubuntu_13.04_Raring
I have tested on varius machine but the problem persist.
There is not enough context to provide informed advice. Please raise a new issue ticket in the github project if this issue persists.