Apple currently got what seems to be huge probs with iTunes and the iPhone App Store. People all over the world cannot log into iTunes App Store to buy and upgrade programs because of connection timeouts. Some people are taking it with a smile, I guess...
Why is iTunes one of the most widespread, annoying, unresponsive but still CPU-munching program out there? Probably because you cannot sync your iPhone without installing it... It's amazingly bad and Apple has to do something about it. There... feels...