It's had a couple slow periods for me but then it was fine a few minutes later. I'm on Comcast as well.
I got a message from someone that instead of up grading equipment--Comast is tagging a lot of things as Spam and Junk and not sending.?
I was blaming the kids to steal all bandwith here. But it seems that the problem is international. I think the whole webb is breaking down! Last week our biggest mail sever (in Sweden) had a giant crash! And all mail disappeared for about two days or something like that.
mine was a little slow deleted my cookies, help out a little but still slow,do not know about now just got back on the pc but it seems to be ok.