Apple's Product Security have sent notification that a new version of iTunes is out and the security fixes in this update.

They list the security fixes here:

http://lists.apple.com/archives/security-announce/2011/Mar/msg00000.html

We'd recommend you update as soon as possible.

Today is a great day to check if all those other applications on your machine need an update.

Chris Mohan --- Internet Storm Center Handler on Duty