Apple's Mac Pro Audio Update 1.1 reportedly addresses odd noises emanating from some early 2009 Mac Pros when using FireWire audio devices in conjunction with Mac OS X 10.6.3. No specifics are given regarding what causes these noises or how the update prevents them. We suspect gremlins. (Free, 516 KB)
How to Know Your iPod Model
If you have an old iPod but aren't sure exactly which model it is, check the info at the Web page linked below. You'll find lots of photos and information that will help you determine exactly which model you have.
Visit Identifying iPod Models