My G3 800MHz iBook used to be able to burn/erase CD-RWs just fine, but ever since I updated to 10.2.4, it always gives me "MEDIUM ERROR"s. I've even updated to 10.2.6 and it still doesn't work! It won't even burn CD-Rs anymore. It'll erase CD-RWs just fine, but all hell breaks loose when I try...