There seems to be a problem today with Network Solutions. If you have a domain name, website or DNS hosted with them, you may find that your website is down.
There is not a lot that can be done. If they think it's going to be an extended outage, you may want to consider moving your website or DNS but the best thing to do is to probably wait.
And there was an outage on the East Coast last week as a router went down. We're not sure if it's related to this or not. They did have a DNS hijack earlier this month, too:
Network Solutions investigating DNS hijack (infoworld.com) - Oct 9, 2013
UPDATE: It was a DNS issue according to their Twitter feed: