Has it really been 10 weeks? (I guess of manufacturing). Anyway, I turn it on and plug in the charger and it says 50 mins remaining, I will report if future chargings have the 8 hour problem. I also downloaded iStat Pro, fan speed is at 2499 rpm right now with the MBA in my lap, I will test with not only YouTube, but also an animation site I use which has h264 encoding of shows to see how the cores respond (hi def flash will really test this current build). If anyone has any other requests in seeing if any other issues are ironed out, feel free to ask. But so far, it doesn't feel broken like the week 1 machine it was exchanged for.