I am not sure if this is a bug or if I have to "turn something on" or what. I was moving some files from one drive to another. Identical files. What I discovered is Windows 7 defaults to making a copy (adding -copy at the end of the file name) instead of asking you whether you want to "copy and replace" (overwrite) the other file as was done in Vista. This also occurs if I move a file from one folder to another within the same drive. I looked in file/folder options but I don't see anything to change this.