Hi! I'm reading here that most of your MBA 11' have completely inaudible fans, but my fan is audible in a silent room. It's not very noticeable, but you can hear the MBA fan crackle softly when MBA's waking up from sleep. Also at idle (2000rpm) there is a soft hi-pitched whirring/humming sound, that I don't hear on my MBP 15'. I'm wondering if I have a badly balanced/faulty fan, or if this is normal? Maybe I'm obsessing, but I often use my MBA in a dead silent room so any sound is noticeable.. Could some 11' MBA users here confirm if the MBA fan are slightly more noisier at idle than MBP fans? Thanks!