If you're one of the users with a late model MacBook Air (2010+), you probably noticed the glaring bug in 10.6.7. Open a MacBook Air running 10.6.7, open iTunes, and play a song. Within a minute or two, your laptop is completely frozen, and the only thing to do is a hard reboot. I haven't used my iTunes on the MBA in a couple weeks because of this.

Apple today released "10.6.7 Supplemental Update" which fixes this crash, and is available through Software Update now. Go get it.