So, to confirm, there is no record of the request at all in your
access log? But facebook is telling you that it could not contact your
servers (sorry, I have no experience with writing facebook apps) ?

Can you ngrep the request coming from facebook to confirm that it is
hitting your server ?

On 13/06/2009, at 9:35 AM, snacktime wrote:

> nginx doesn't log these errors for some reason. They don't show up
> in the access or error log, and we have both turned on. If I could
> look at the raw data I could figure out if it's facebook that's
> breaking a spec somewhere, or if it's an nginx bug. We have
> narrowed it down to being specifically a cookie issue. More
> specifically it's facebook connect that sets the cookies nginx bombs
> on.
>
> Posted at Nginx Forum: http://forum.nginx.org/read.php?2,2757,2875#msg-2875
>
>