I just discovered 2 purchases from within my iTunes account. They appear to have originated in China as well.
I'm no expert but this does not appear to be a case of "stolen" credit card numbers. (I've checked every transaction on my account and these are the only ones.)
About two weeks ago, I tried to make an app purchase via the app store on my iPhone and suddenly, it said my password was wrong. I went to my laptop, tried logging into my account and it said there was no such username. I went through the whole iforgot/password retrieval and lo and behold, I didn't seem to exist.
I then contacted apple support, they reset my password and gave me a direct link to myinfo.apple.com. When I got in there, I saw my username had been changed (to a shorter version of my original one) and my country of origin had been changed to China.
And yes two charges were made - all were iPhone apps including a bunch of free ones (???).
I too have been a lifelong Apple/Mac user, and am terribly disappointed in their customer service towards this. A rather stunning example is when I e-mailed to inform them that my username & country of origin had been changed -- and that I had to change them back, I got a reply that said, "Great, glad to hear your issue has been resolved."
Again, I repeat, this doesn't seem to be a case of somebody using a swiped credit card number, it appears to me it was done by hacking into Apple's system. I'd like to hear something more from Apple than "call your credit card company".