Previously on File Sharing Farces, I had upgraded to Mac OS 10.5 Leopard, royally buggering my networked hard drive that used Samba for file sharing. I tried a workaround by installing MacFUSE and setting up an FTP file system. This worked ok, except it would keep dropping out and iTunes didn't play nicely with it (complaining that the original music files could not be found, and it wouldn't let me sync my ipod or add new music).
After a bit of intense googling I found this forum thread about the many different guises my LanServer NAS goes under (Hotway LanDrive, NAS900, etc). On the last page (27), there was a link to a firmware upgrade from one of the other manufacturers that use the same chipset. This claimed to support Mac OS 10.5. I gave it a go, fully expecting it to turn my NAS into an expensive shiny aluminium brick.
It seems to have worked perfectly, I can now browse the shares in Finder. My next task is to get it automounting and serving music. Hoorah!