Currently Being ModeratedApr 7, 2013 11:56 AM (in response to Raziel1)
I don't believe I have seen any version of Mac OS X behave the way you describe when saving files. When dragging a file to a new location, sure, it will behave that way, showing the following dialog:
However, if you are saving a file and specify a name and location in the save dialog that are already "occupied," the only options will be to cancel or to replace the original.
That is how it has been for as long as I can remember, and I've been using Macs since 1984.