I am paying over $250 a month for Comcast service and have been experiencing this issue non-stop.
I am about to swich providers.
It is evident that Comcast could give a rat's azz about their paying customers since this issue has been prevalent for quite some time.
You see Comcast is SCAMING you.
They are in bed with their advertisers whom most likely lobby for this issue to occur because everytime you refresh you have to watch the same comercials all over again until miraculously the show starts working again.
By the time the show comes back on you've watched the same comercial 6 or 8 times.
COMCAST IS SCAMMING YOU!
THAT IS WHY THIS PROBLEM IS NOT FIXED
CHANGE PROVIDERS ASAP!!!!!!!!!