We just upgraded our forum software and started getting 503 errors almost immediately. We are running 4.0.9 LSWS. I disabled mod_security to see if the problem goes away, but I am not seeing anything in the logs to indicate that it's a mod_security issue.
Edit: With mod_security disabled the problem persists. I just downgraded to 4.0.6 to see if it fixes this problem. I can tell you that 4.0.6 is still generating apache default pages when certain text is entered into a php input field.
Last edited by VortMax; 08-07-2009 at 05:33 PM..