Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, you@example.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
seems odd to me that this message really means: "your post has been completed successfully... do not go back and refresh or your post will be duplicated and make you like like a forum retard"