I currently live in Brazil and at the beginning of 2008 I am flying to the US and planning on buy many computer stuff ( cheaper there). My current macbook has a 160gb hd 5400rpm. I know that nowadays there are 250gb 5400rpm for macbooks, but what about a 500gb? When is it going to launch? I am planning on buying a 500gb internal and a 500gb firewire external for backup. About price, a 250gb internal today is about 200 dollars, so I am imagining the 500gb to be 400 dollars. Plus the firewire for 150. It fits right in what I am allowed to bring from the US. Any idea or help? Thanks.