Hangs when using drag-drop to overwrite several files

When I am dragging several (10 or more) .html and .css files from explorer, to replace them on the server, it hangs between file uploads, after the confirmation dialog goes away, asking if I want to overwrite or skip the file. When I check the "All" box, and then overwrite, it uploads all the files without a hitch.

There isn't any error message, and Windows just states the program is "not responding". Sometimes it hangs after the first prompt, and other times it will make it through a few files before it hangs.

I am running Win2k professional with SP3 and SmartFTP v1.0 build 973.