404. That’s an error.
The requested URL /forums/attachment.php?s=3e8be4fdb97194d885fc5fd4c03b13de&attachmentid=8431&d=1240512664 was not found on this server. That’s all we know.
/forums/attachment.php?s=3e8be4fdb97194d885fc5fd4c03b13de&attachmentid=8431&d=1240512664