Hi, Yesterday I posted a thread with regards to a new macbook my sister purchased. We brought the macbook home and as I was helping her set it up I noticed that the whole case was vibrating. The vibrating goes away when you put a thin piece of paper under the laptop...hmm, sounds like quite the defect. It's actually super annoying because you can really, really feel it (it's more than subtle). So I told her to take it back to the apple store today, explain the problem, and they'll replace it. Afterall, the computer is one day old and clearly defective! I was at work today - so she went alone. She goes into the apple store and the genius acts like theres no problem at all, but trust me, the problem is really obvious. she knows almost nothing about computers and she even noticed it. She told me that she really had to beg the genius to change it because at first he wanted to charge her a 150$ restocking fee. Finally, she told me that after an hour of arguing with him, he changes it, but on the condition that she cant get it changed again even if theres a defect. she really doesn;t have a choice at this point because it's either pay 2000$ for a defective machine or get one that's even worse. she decides to play the lottery and get the replacement...this time she opens it up in the store. low and behold this one vibrates too. they refuse to change it, and not knowing what to do, she goes home. I get home from work today and the replacement is just as bad, if not worse. After I bought my 24" iMac and my mbp and after my brother got a mb, you figure they would be a little more sympathetic - especially to someone like her who is new to macs. any other store is MUCH looser on the return policy. Tomorrow I'm going to go down to the apple store with her. Being more educated about macs, perhaps I can get them to change it. She really isn't happy with the computer because the vibrating is really obvious. Any thoughts? Thanks Edit: Wow, the replacement they gave her is a week 19...doesn't even have the new iLife!