@bigben334: Yeah sure, you can switch the RAM out before you send it into AppleCare, but what's the point? If your PB screws up and you need to send your PB in, you won't be penalized or have your warranty voided if you have 3rd party RAM in there (eg: Crucial, OWC, etc). They will still service it for you. They just won't replace your RAM if it's faulty. The 3rd party vendor, say Crucial, will replace it. You would need to contact Crucial to have your Crucial RAM replaced if you got faulty RAM, not Apple.