Just wanted to inform you that I just upgraded my gigabit LAN network (changed 100Mbit router to 1GB router) and my transfer speeds from NAS to PC doubled !!!
Now I'm getting 26MB/s (megabytes/sec) when transfering files from NAS to PC and 13MB/s when transfering PC -> NAS.
So, it is also important to have Gbit router.. not just PC & NAS with 1gbit LAN card..