@Payne747: I had this problem and it was driving me insane. Google came up with almost 1 million hits on the same problem (with no solutions).
In my case, everything worked fine, and then, all of a sudden, copy, move, rename, and delete operations started taking forever. In my case, the problem was Windows Search. I moved my index to another drive, and then later, changed the drive for a larger one. Of course, I completely forgot about the index. Every time that Vista performs a file operation, it tries to update the search index, trying over and over again to start the Windows Search service, until it finally times out. That is what takes so long.
Check your Windows Search service. If it is set to automatic start, but isn't started, that is likely your problem. Try disabling it, and then perform a copy or whatever. If it works properly, then you have found your problem. There are various resolutions all over the Web.