as i see this is an old thread but the topic is not
my DS112j disconnects every now and then and tell me there is a problem with the network connection. but im sure there isnt.
it happens while uploading files with the file station tool and it disconnects the net-volume mounted in windows.
and there is no firmware on the download site for the drive..
of course i use the latest DSM 4.1-2668; Build Date: 2012/12/18
any ideas or confirmations?