I saw your post here:
In response to Acuario51 having buffering issues.
I too was having buffering issues the other night about the same time.
I think the problem may have been on a larger scale than just localised to afterhours.fm. Durign the time, my pings to the US mainland were very laggy (300ms+), and I was getting DNS errors on a few US based websites.
So in response to this, and seeing as Acuario51 also lives outside the USA - I think the problem would most likely be something else, other than the stream.
However - I'll keep an eye on it and let you know if I encounter any more issues.