I just purchased a 3TB MYBOOK Live, when I copy files over the files transfer quickly until they reach the last 5 seconds of file transfer. It can then take up to 6 hours for it complete the final write to occure and the copy window to close. This only seems to be an issue of files of a 200k and l…

That may be related to a WebDAV issue. Try browsing the WebDAV FAQ to see if that applies. http://community.wdc.com/t5/My-Book-Live/WebDAV-FAQ/td-p/463854