Here's the issue I am having. I can plug in an external USB keyboard and mouse however I can not mount and USB flash drives or USB external disks. I get the following error message: kernel Flash Disk : family specific matching fails I am running OSX 10.5.8 on a 15" Macbook Pro 2.53 Ghz Any suggestions? Apple Care has not be very helpful so far. I've verified/repaired disk permissions with lo luck. Thanks!