The up one level button has gone. GONE! AAAAAAAAAAAAAAARGH. How could you take away the single most used button from explorer? And before someone jumps in and says "Hey you can click on the address in the address bar." YOU CANT IN LIBRARIES. So bring back the up one level button and get rid of libraries, because if we were too retarded to navigate our own file system, and recquired libraries, we would buy macs.
No, Schuyler, the backspace takes you back to the previously viewed folder (just like in IE with previous web pages), not up a folder. Going back to the previous view may indeed take you up a folder but that's dependent on how you navigated to the current folder and not related to the functionality of the backspace key.