Several of our web properties experienced downtime while yours truly was travelling overseas without a computer.
This was due to our server was 1) out of disk space and 2) out of memory. The disk space issue has been resolved and the memory issue has been resolved by reconfiguring apache and moving to fastcgi from mod_php since most of our pageviews are on static html content and don't require the overhead of keeping php in memory for each apache worker process. By using fastcgi each worker process requires far less memory.
