I just bought a new 2.4GHz White MacBook a week ago and now it's changing an new airport card via service provider cause it's didn't work ,can't turn on and sometime KERNEL PANIC. They told me that it becase airport card malfunction so they'll replace a new one for me since it's in warranty (7days bought) so i would like to ask if anyone have the same problem that i have about the latest MacBook and what should i do if it have any problem again (refund or force them to give me a new one) Thank in advance