When you are in the finder click on the view menu item and selectShow View Options, the view options window will open then go to the Sort By pulldown menu within the view options winow, next slect None.
All previous issues have been resolved with Mavericks. No more fuzzy icons, no more Photoshop problems, no more files and folders jumping to upper left corner. Now we can try and fix new problems like QuickTime Player not working as previously.
I just dealt with this by going to system preferences, going to Displays, and clicking on 'scaled' and selecting several options before selecting the highest Rez. That seems to make to machine aware the display its giving is too big for the screen.