I had to put the application inside the "Applications" folder under Mac OS X 10.1.4 to avoid many crashes. Really fast and efficient but I don't really like the Sherlock like interface for displaying paths. Under Mac OS X, I'd rather find some one-line paths like "/rootfolder/subfolder/filename" to have an immediate view of files locations. Looking at the file location to know which duplicated file should be erased is a real necessity and scrolling down everytime to discover the location isn't pleasant at all. The best thing would be to display the path just on the right of the files names so we could compare instantaneously duplicated files locations. Type and creator columns could be put somewhere else in a window, a drawer or inside the actual sheet giving more informations about the files. Adding a button to display such informations could then be an idea.