After the mac clients transfer files it looks like the transfer did not finish and the last folder has its file size listed as 0 and you cannot open the folder or view its properties.  It usually happens on a _css folder but has happened on others.  If you try to open that website you will get a login window.  The only way to open the folder is to reboot the webserver and reset the permissions on the folder.

We have not had this problem with any Windows clients only the Macs.  Any one else seen this?