Apple has posted a small but significant update to its AirPort client software for MacBooks and MacBook Pros. The new version fixes problems created by Mac OS X 10.5.8, which can potentially affect AirPort networking performance while a notebook is running on battery power. The update is 1.68MB, and can only be installed on 13-inch MacBooks launched between late 2007 and late 2008, 15-inch MacBoo
