Well I was really hoping that 3.3 would fix this, but apparently not. I'm not certain why multitask switcher is able to switch between multiple library documents, but will not keep more than one notebook in cache. In fact, quite often if I'm on a notebook and hit home to go open something in my library even a single notebook closes from multitask switcher and is no longer available. This seems like a super easy fix, just leave notes open in cache. But as it is if I want to get out of notes I'm currently taking during a lecture, switch over to a terminology notepad to quickly grab a definition or copy one down, then go back to the notepad to continue to take lecture notes I cannot do this. I can switch between 3 or 4 books all day long, but not notepads. Anyone find a trick or a workaround for this?