Sorted:

PHP memcache is installed and working, but sporadic Class 'Memcache' not found error occurs-Collection of common programming errors

Nginx PHP (5.5.1) FPM strange errors-Collection of common programming errors

nginx+ uwsgi gives 502 Bad Gateway-Collection of common programming errors

Unhandled Exception in Django-Collection of common programming errors

class 'psycopg2.InterfaceError': connection already closed-Collection of common programming errors

Apache FastCGI app fails to find suitable libfcgi (Mac OS 10.8.4)-Collection of common programming errors

Magento, NGINX, PHP-FPM, APC, MEMCACHED, 16gb Ram CentOS, Spiking PHP-FPM to 100% CPU-Collection of common programming errors

Using a mounted NTFS share with nginx-Collection of common programming errors

PHP with FastCGI on IIS6 behaves differently than ISAPI-Collection of common programming errors

Seeing what gets written to stderr in Python web site using FastCGI-Collection of common programming errors