Well I am an Open DNS user. But a couple of minutes ago, when I was tryin to access some web pages, it would just give connection error message. Well it turns out to be, that the openDNS servers are down. I changed my DNS settings to automatic and now it goes through att DNS servers (or whatever they point to).
Still I have good faith with openDNS. It gives you a plethora of features and stat reports. And an awsome tool on parental control. Since you block it directly from the DNS server, you dont have to worry about applying parental control to all the computers.
Hope it'll be back soon