I have a DSM 750 that has worked great for the last 1 1/2 years. The other day I tried using it and it froze on the Medialounge screen. I rebooted it and tried to reconfigure the network on the media server screen. The DSM was unable to see my network (the same network it used to connect to without any problems). After several reboots and setting the settings back to default, now the DSM freezes when it tries to search for the network. Anyone have any suggestions on whats going on?