The release of Mac OS X 10.6.7 isn’t even two weeks old and Apple has issued a supplemental update that patches the latest OS release. The patch fixes problems encountered by late 2010 13-inch MacBook Air users who upon launching iTunes experienced crashes that left their computers completely frozen and unresponsive.
I even experienced it myself before the problem mysteriously disappeared after forcing the machine to restart by powering it off and then on again. Since then I haven’t had a problem, but for some the problem persists. Luckily Apple has a fix.
According to Apple:
This update addresses an issue that makes the system unresponsive when using iTunes. It is recommended for all 13’ MacBook Air (Late 2010) users running Mac OS X v10.6.7.
You can grab this update via Software Update on your Mac or download it directly via this support page.