We are running 7 servers in a cluster (followed manual) on Debian. Yesterday, we updated all servers to 3.1.8p1. After the upgrade, Apache went down on the dedicated webserver. The error indicated a user, web17, didn't exist and prevented Apache from starting. In checking passwd, web17 was no longer there, although the info was still showing in the admin panel. I was able to find the settings for web17 in a backup of passwd and manually re-entered the info in passwd. After doing so, Apache came back online. However, the link for another website (web1) has been deleted. I can find the files in /var/www/clients/client1/web1/web and the databse appears to be intact. But the link to the site domain name is missing. In /var/www, running ls -al returns the web domains with the corresponding links to the /var/www/clients directories for all domains except the one that's missing. How can the link be recreated without breaking the info in the master db or destroying any other data? Any idea why an upgrade might have wiped out a user from one site and the link for another? There were no errors during the upgrade process.