MacRumors.com

After complaints about white spots appearing on the most recent 15" PowerBook G4s, Apple issued a statement on the issue:.

"The new 15-inch PowerBook has been a big hit with customers since its introduction last month. However, some customers are reporting the appearance of faint white spots on their displays after using the system for a short period of time, and Apple is investigating these reports right now. Any customers experiencing this problem should contact AppleCare."

The appearance of the spots appears to be variable, and may develop over time. According to one user, the spots may be due to "spacers" built into the LCD screen.

This extensive thread at Apple's Discussion forum documents user experiences on this topic.