Been having probs with Comcast the last couple days...it would work for about an hour, then not work for several, and back and forth...so called them last night.
Some guy several states away had us going thru hoops...most of which we'd already done from past experiences. Finally he gave up, said he wasn't showing a connection to us and set up an appt. for service today to check lines.
It came back on shortly after the call...and naturally has been on ever since.
Cable guy looked around when he got here, said it all looks good, but couldn't do anything until it went out again.
I bet it was on their end, and they fixed it when they got the service order.