I can't log onto apple.com, music store, SU

This has been going on for over 12 hours. My connection is fine, I can log onto any other site. Software update doesn't work, Itunes music store won't connect.
What could be the problem? I've tried it on both a powerbook and an ibook on the same connection.

UPDATE

That's so weird. I can connect to everything Apple with a dial up connection. But I still can't with my broadband. Anyone have ANY ideas?

Final Update!

Okay, it is now fixed. The problem? I still don't know, but my theory, and don't flame me, is because I installed final cut 4 with a naughty serial number, and after Apple figured it out during software update, they cut my entire broadband connection with them, including .mac.
The connection failure only occured after the installation, and now, after 2 days, I decided to delete all traces of it, and amazingly, it works fine again!
None of the other computers, mac and windows, would log onto anything Apple over the last couple of days. So weird.
Am I talking out my a$$ regarding this theory? What do you think?
It's the last time I'm going to pirate an Apple software anyway...