Hope this may help others~
I too had connectivity problems at home. I could connect to open networks elsewhere but not my home network. Like many others, I would get the message "obtaining IP" and then "disconnected". I tried many things to correct it and finally stumbled on my solution.
I set a static IP for the Dinc and it connected immediately and I have had no issue since.
Prior to this I had tried changing security settings from WEP to WPA to open, switched broadcast channels and played with other router settings. I also tried a hard reset and factor reset on the Dinc. Obviosly those things did not work for me, however, they have worked for others in the past and may for for you.
FYI, my info;
baseband
2.15.00.07.28
build
3.26.605.1
Router~ Microsoft MN-700
SSID~broadcast