Yes... we were down for a good part of the day today as there was a problem with the connection to our backbone provider. After hours, multiple calls, and service personnel coming to our location... we finally got it back up. And, no one knows exactly what caused the issue... but, it was on their end.
The site has been hanging here and there on the ads being delivered from the advertising company we work with. With it being the holiday season, the volume or both traffic and ad delivery on the web is at its height, and that's probably what is causing serving delays from their servers.
