<b>5500/6500 L2 cache problem: a permanent fix available

Update As previously reported here, Apple has released a 5500/6500 L2 Cache Disable extension that "temporarily disables the L2 cache on your computer allowing you to install system and application software without the symptoms mentioned above."

According to a recent MacInTouch item, the ultimate cause of the problem is a defect in a printed-circuit board from one of Apple's suppliers. Currently shipping units no longer have this "problem" board. Apple will repair affected systems that have previously shipped. Call Apple Assistance at 800-500-7078 for more information.

Update: Several readers report that, after they call the above number, Apple denies knowing anything about this