A Los Angeles Superior Court has given final approval for a class-action settlement that allows G3 Power Mac owners who purchased Mac OS X before May 15 to get a refund – as long as they live in California and did not regularly use OS X on their G3.

The class-action lawsuit claimed that Apple failed to support certain G3 models with the same OS X performance enjoyed by G4s.

The allegations centre on an Apple press release that promised: "Mac OS X will feature pre-emptive multitasking, memory protection and advanced virtual memory, and will be fully optimized for Apple's PowerPC G3-based computers."

Apple had posted details of the settlement on its Web site but this has not yet been updated to reflect the final ruling.

Last year Apple agreed to pay $350,000 in legal costs to King & Ferlauto, the law firm that brought the suit.