[wp-hackers] Bug with is_404() in WP 3.0.4?

[Andrew Nacin]

On Tue, Jan 4, 2011 at 2:38 AM, Frank Helmschrott <fhelmschrott at gmail.com>wrote:

> Hi,
>
> i'm trying to get my 404 pages handled smart and get them redirected
> to the post possibly still existing after a permalink change. I've
> tried 'change permalink helper' from Frank Bültge which already worked
> and i've also tried 'Smart 404' plugin.
>
> Both of the don't work in two blogs i've tested (also on a completely
> naked one). Both work with the is_404() function to hook into
> wordpress and query the database for posts. Both already worked with
> at least 3.0.1 - is there any significant change in 3.0.4 you guys
> know of and that could break this up?
>
> I've got tons of traffic on error pages now.
>

If your code worked on 3.0.1 there's really no question that it should have
worked on 3.0.4. You probably have something else going on there.