Its all over the web
This is a widespread problem and Apple have acknowledged it.
They say that only 400 personal accounts were hacked but nobody believes this small number is true and that is just one of the ways in which they are being hacked.
Some methods arent fully understood yet.
In the mean time check your iTunes account for unauthorised transactions.
Read about it here
http://www.gizmodo.com.au/2010/07/yo...tunes-account/
And here
http://thenextweb.com/apple/2010/07/...e-hack-itunes/
Follow links to Apples apology
Seems they are only just getting to the bottom of how the iTunes store weaknesses are being exploited.