If you mean with servers the iTunes or UPnP the answer is that I've never refreshed them correctly because when I try to, it stops at 4%, and don't carry on... I can for example, press the refresh button for the UPnP and the progress bar appears, then it comes to the 4%... and it just don't move from there... Furthermore, the HDs stop spinning after the 15 minutes of the config... Wich I think means it's not refreshing nothing. For using again the 323, I removed the large file... nearly 5 GB to the trash (well, it hasn't got trash)... And with my 1 Mb/s internet connection, you can imagine how much time that means for me. I don't know if the DNS-323 is working fine, because I can't use the iTunes Server and either the UPnP streaming server (my XBox 360 doesn't find any media on it). I still have it on guarantee, shall I return it?