Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5) I have a 12" PowerBook 1.5ghz. Maxed out RAM. I was running leopard on it and it began freezing, spinning beach ball. I assumed the HD was bad. I hooked it up to my iMac in target disk mode and erased the HD and ran disc verify which it passed. I attempted to install OS X Tiger but received the message "there was an error...please restart". Does it sound like the RAM could be bad?