[PLUG] Weird Wordpress 2.7 behavior?

[Joe Pruett]

> I have a couple Wordpress 2.7.x sites that are sending 404's to my
> monitoring system (Nagios, using the normal check_http plugin) ,
> regardless of what URL I hit on the site. And it's a custom
> WP-generated 404.
>
> But.
>
> Hitting the sites using a browser from the same server that is hosting
> the monitoring works fine. Get content and a 200 status as expected.
>
> Changing my user agent to that which the monitoring system sends
> doesn't break it on "real" browsers, so it's not a user agent thing.
>
> The only common thread I can think of is that these sites are running
> Wordpress 2.7. They are the only ones we are hosting that are this
> new. Any thoughts would be appreciated. My prayers to the Googley-bear
> so far have been fruitless.

well, the first step is to see what your server logs have to say.  do you 
see the 404 in there?  anything in the error log?