iTunes keeps telling me that my billing address is entered incorrectly, and demands that I correct it before I can do anything with the iTunes Store, even update apps. But the address is fine, I checked it a dozen times. The credit card, security code, everything, it all matches up. But it still tells me there's a problem, so my account is basically frozen.
A few weeks ago I registered a new billing address and credit card with my account to make a large purchase from the Apple store, but I changed everything back, and have successfully made app store purchases since then.
A search for this problem turned up nothing, so I'm just wondering if anyone here has ever had a similar issue. Thanks, here's hoping I can start updating my apps again soon!