Arghtastic,
I realize some of these sound like dumb questions, but I'm just trying to help. In the OBI202, you will notice that there are 2 (two) locations for DNS Server entries... one under WAN Status and another under WIFI Status. Could you confirm that you have the correct info inputted for whichever network interface you are using?
I would guess you are not using the WiFi feature of the OBI202, but let's just make sure the DNS Server entries are correct for the WAN and/or WiFi side. You could also try 8.8.8.8, 8.8.4.4, and 4.2.2.2 for DNS Servers other than OpenDNS.
pc44