OS X 10.5.6 Breaks Some MacBook Pros

As PC Mag reported last week, Apple OS X 10.5.6 can break some MacBook Pros leaving some users (like me) with a dead backlit screen after the Apple logo appears. While I initially thought I had a hardware failure, it turns out that there is a fix as long as you have an external display, keyboard and mouse. The problem only appears on the second restart, so if you sleep your MacBook a lot as I do, you might not realize the problem is relate to the OS update you did the week before. The problem was related to older, incompatible firmware that Software Update wasn’t flagging before the upgrade. This definitely gives weight to the argument for waiting a bit to run software upgrades.

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