I am completely able to download all of the FREE Apps I want from the iTunes store. But I haven't actually been able to purchase any Apps (or anything else at this time) from the iTunes store because there's a glitch in trying to update my credit card. The card I had on file expired last month and I need to put in the new expiration date before I can make a purchase. But each time I try to do that, I get an error message in iTunes telling me "Your request could not be completed". It makes reference to checking the date and time on my computer and provides a link to a Knowledge Base article about such problems. Nothing in the KB article helped me solve the problem. It's not that I can't log into my iTunes account (I can), it's that I can't update the payment information. Until I'm able to do that, I can't buy anything. Weird! Mark Edit: Setting the date and time forward (even 2-3 days forward) doesn't cure the problem. And the KB article that Apple links to is for Windows users having this problem under iTunes 7, not for Mac users.