Just started playing with 10.9 DP1 - upgrade from 10.8.3 on a test box. Issue I've run into is that I can't open anything placed on the desktop with a double-click. If I right-click and select "open", the item will open with no problem. If I double-click something in a Finder window it will also open...just items on the desktop won't open. I tried a restart with the same results. Any ideas?