I have a 13-13 install on CentOS 6.9, running inside a Proxmox container. This one is used exclusively as a fax machine with Incredible Fax. I had 5 months of uptime without a single hiccup, then yesterday the PBX stopped answering calls. I checked in the Hylafax front end and deleted a ton of old faxes. I rebooted and it worked for most of today then went down again. I just went into an SSH session and ran 'df' and found that /dev/sda2 is running at 88% full and /dev/sda1 is running 70% full. I'm not sure if this would be enough to crash the system, however I'm guessing it wouldn't hurt to go in and prune some log files and whatnot. Anyone have a suggestion on where to look for some low hanging fruit to clean up on these volumes? Thanks!