Sandy\'s use of MacSFTP to connect to our server, for some unknown reason, was causing a PAM authentication failure - even though it would log him in fine.  Since I installed fail2ban to protect the server against SSH script-kiddie attacks, he got banned a couple times since a line that said \"Authentication failure\" popped into the log everytime MacSFTP connected to the server.  He\'s switched to fugu, which didn\'t cause an authentication error in the logfile.