Before shipping the lemon Apple back, I wanted to clean it up a bit. Grab some files off the desktop, clear browser caches, temp directories, etc. But now the MacBook will not boot at all. No amount of PRAM refreshing, battery removal and power draining seems to solve the problem. Oh well, off it goes back to Apple with my banking info still in the browser cache... hopefully they will just through the thing into a shredder...