I've had a wade through but havent really found an answer. Using whatever app, be it safari, chrome, MS Word, adobe reader etc, if I try and do a "Save As" or an "Open" from the file menu (ie one that brings up the finder dialogue box), I can only save to the folder that's displayed. If I try and scroll down to find a file that I'm trying to open, or scroll to another folder to save the file, the app freezes for a few seconds then crashes. Has anyone else come across this? Late 2012 iMac 27 with PB1 on it.