Cannot download iPhone Apps or Access iTunes Account

The last couple of days I have not been able to download any iPhone apps or Access my iTunes Account. I get the dreaded Network Connection Time Out.

I have owned various Macs for 10 years, have been an Apple Specialist, I am a programmer / analyst and am very well rounded in networking and firewalls.

I have tried all the tricks and tips, but this I feel is a problem on Apple side or possibly COMCAST (my ISP).

I can download Podcast without any problems. But I cannot purchase music, download any Iphone apps or when I click my account, I continue to get the Network Time Out. I have seen many post referring to this. This has only recently started happening (around Oct 13 -14). That was the last time I was able to receive any updates or download any apps.

In addition I have tried to download apps thru my iPhone 4 and I also get a Time Out.
WHat is going on? Please Help Apple!

Thank You