Anyone have issues with the MBA not displaying a 100% charged as the percentage just displays 99%? Even after the status shows it as "Charged". Also i keep having a frozen screen after the screen goes to sleep. And I have to swipe my mouse all across the screen to "erase" off the frozen screen to unveil the user login screen. Anyway to turn it off - I dont have this on my old MBP but this is so evident in the MBA 2011.