Just noticed this one, too: if you control/right-click on the desktop to make a new folder, the folder USED to be created in the exact location of your click in Tiger. Now, in Leopard, it seems to shift a few folder widths. No particular pattern. Seems like no big deal, but I'm used to having browser windows open, then being able to click on the desktop, make a folder, and then drag photos etc into the folder. Now, the folder invariably slides under one of my windows, and I have to Exposé to reposition it.