I, too, get the 102 connection error on my UN40B6000. Infolink and the network test work, but am unable to update firmware.
BTW, I attempted the firmware update to try to solve a problem viewing content from my Sony Blu-ray player in 1080p... the Samsung will only display 1080i.
I am the happy owner of a new UN55B7000. Well, almost happy...
When I try to do an online firmware update, I get a message that says "Server Connection Error (102)" Anyone else see this? What is error 102?
Everything else, network-wise, works fine. I even have native DLNA streaming working between the unit and a Windows 7 laptop on my home network, without having to install the Samsung sharing client. The only network-related thing I can't do is check for a firmware upgrade.