We are running 7.5.3 on a Dell server. We have now had the server hang 3 times in the last two months...each time on a Monday morning while it was running the autoreport.php --auto weekly function in cron. Is this a known problem? I have two servers, but only 1 server seems to show this problem... however, there are no error messages in any log files. The server requires a hard reboot and then seems to come back up fine.