Owners of the Mac PowerBook G4 are experiencing an audio defect in their high-resolution, 15- and 17-inch models. The problem, described as a looping echo sound that magnifies itself for about four to five seconds while playing any kind of audio or video, was also reported in 12-inch notebooks. There are also numerous reports that this problem occurs in other Apple computers such as the Power Mac G5, iMac and iBook. A group has started an online petition to demand that Apple take action and solve this problem. If you're experiencing these difficulties, head on over here to sign the petition.

Contact information for this author is not available.