Sorted:

undefined symbol: __gmp_get_memory_functions-Collection of common programming errors

IPv6 and its various incarnations-Collection of common programming errors

pg_config, ruby pg, postgresql 9.0 problem after upgrade, centos 5-Collection of common programming errors

What are the logs to check for a hung LAMP server?-Collection of common programming errors

Facebook Connect for Drupal 7-Collection of common programming errors

Error with Facebook API Fatal error: (Uncaught OAuthException: Error validating application)-Collection of common programming errors

PHP Fatal error: Class 'Facebook' not found in-Collection of common programming errors

Call to a member function getLoginUrl() on a non-object in fbconnect.pages.inc on line 230-Collection of common programming errors

Fatal error: Call to undefined method getLoginStatusUrl-Collection of common programming errors

PHP Facebook Class: how top block fatal errors?-Collection of common programming errors