(UK user here btw) I just phoned Applecare after yesterday my fairly ignorable perpetual high pitch Macbook whine was eclipsed by a much louder hiss/whine coming from the F1 key area, which goes away when the CPU is in use. The guy I spoke to said that the problem was known, and he said that Apple knew about this problem with all Intel laptops. He seemed to say that it was NOT a hardware problem, and would be fixed 'soon' by a new software update - and if it turned out to be a hardware problem Apple would take back all the Intel laptops and fix them. I asked him when the software update/hardware fix would happen, and he said within 2 weeks. It does sound hard to believe that Apple would just take back all the units they've sold, fix them and return them. Also I wonder if this new software fix in the works is a real fix or just one of this temporary workarounds that people have already discovered. In other words, will it be a fix that does not reduce battery life by forcing the CPU not to go idle?