It seems that in the Alfresco 1.1.0 Jumpbox the samba task interferes with the CIFS integration of alfresco. In order for it to work you need to disable the samba task from the base system:

sudo update-rc.d -f samba remove

then reboot.

The links from CIFS also use localname, which is probably not the best of choices for the link since it does not seem to resolve. I found the reference but could not find the location of the properties file that sets ${localname}.