I use WS_FTP, and just noticed a rather bizzare problem. I can ftp and upload entire directories to the server without any problems, for example:
and all of the files contained within it. However, if I try to reupload the same folder to try and quickly update all the files within it, WS_FTP complies, but the files don't actually get replaced with the newer versions. In other words, I'm still stuck with the original copies of the files, not the new ones. WS_FTP doesn't seem to complain of any errors either.