Hot on the heels of iTunes 10.2, Apple has released iTunes 10.2.1. The update helps with syncing iOS devices running iOS 4.3. It also improves Home Sharing for iOS 4.3, which allows you to stream music from your iTunes collection on your Mac to your iOS devices. In addition, an issue where syncing photos to your iOS devices could take longer than expected is corrected. (Free, 75.61 MB)
Improve Apple Services with AirPort Base Stations
You can make iChat file transfers, iDisk, and Back to My Mac work better by turning on a setting with Apple AirPort base stations released starting in 2003. Launch AirPort Utility, select your base station, click Manual Setup, choose the Internet view, and click the NAT tab. Check the Enable NAT Port Mapping Protocol (NAT-PMP) box, and click Update. NAT-PMP lets your Mac OS X computer give Apple information to connect back into a network that's otherwise unreachable from the rest of the Internet. This speeds updates and makes connections work better for services run by Apple.