I am not demeaning Apple or ITunes. This is not about them, but some bad guys out there. There some phishers after your personal information who have decided to go after ITunes users. This has been reported in the computer trade papers, They have created a counterfeit email (looks just like Apple and ITunes) that says there is a "problem" with your ITunes account, and you need to log on to "this link" to clear up the problem.
The link takes you to another counterfeit web page where they ask you to re-enter the credit card info and other personal information which the real ITunes site might actually ask for.
At that point, when you hit "Submit", they gotcha!
I'll say it again, when you get an email that says there is a problem with your account, go to the main (or your bookmarked) page for the company. Follow your normal logon for your account – be safe.
Here's a clue – if the link points to an IP address (http://12.34.567.898/www.bankofdzoid.com) or some other site like http://www.mergetroidis.com/service.bankofdzoid.com.it's probably a fake. Did you notice that the "bankofdzoid" did not come first? Here's one that could be valid http://customers.bankofdzoid.com/
If you want more information, give me a call (or email), or find out how you report fradulent emails to your bank, credit card, etc.