Details: Ubuntu 10.04 nginx/0.7.65 php 5.3.2-1ubuntu4.9 apc 3.1.3p1 My site is psvitaforum.com and in the past few days it has been in different states of availability. Sometimes xenforo loads, I can even log into admin site and go through the menus but the front page displays this: Instead of the forum list. Other time the server times out and nginx returns 502 and 504 gateway errors. If I restart fastcgi, the server immediately goes back up but then I'm guessing some cron job or caching triggers the error again. I figured I would try here first before trying linode's forums. Thanks. I attached the full phpinfo results.