problems with the iTunes Music Store?

As I noted earlier this week at the SG Newswire, Apple has updated just about everything, including a new version of iTunes, where they're offering sales of ABC shows like Lost and Desperate Housewives.

Since I upgraded to iTunes 6, I've noticed lots of problems with the iTunes Music Store. I've purchased three albums this week, and on two of them, I got an error that "We could not complete your request. An unknown error occurred (502)" (thanks for that useful error message, guys!) which stopped my download. Earlier this week, I waited a few minutes, checked for purchased music, and the download picked up where it left off.

However,today I purchased The Mirror Conspiracy from Thievery Corporation (holy shit is it a great album) and the same thing happened . . . but this time, when I checked for purchased music, it said I had everything I'd paid for, which is wrong, because one of the songs is nowhere to be found on my machine. It's probably due to the insane load on their servers right now, and I'm going to contact customer support and see if they can help me.

I read at the Unofficial Apple Weblog that an episode of Lost was - har- lost, but when he was able to get his file later on. I have not been so lucky. Has anyone else had problems like this?