Is Apple Headed for an iPod Shortage?

Apple is struggling to keep up with the demand for iPods, which could lead to a shortage during the holiday season, according to a Wednesday research note from Kaufman Bros. analyst Shaw Wu. Amazon.com, for example, recently pushed the availability of the 8GB second-generation iPod touch from 11 days to 5 weeks. The 16GB model is still at 3 to 5 weeks.