[wp-hackers] Missed schedule - WP Bug

[Andrew Nacin]

On Tue, Jul 20, 2010 at 5:37 AM, Gavin Pearce <Gavin.Pearce at 3seven9.com>wrote:

> On the WordPress edit post page, where it lists all pages on the site
> (/wp-admin/edit.php), on the right hand side just below the date for
> each post, I have the message:
>
> Missed schedule
>
> ...
>
> A quick Google confirms it as a bug in WordPress:
>
> http://wordpress.org/support/topic/343080
>
> Anyone ever fix this?
>

Nah, scheduled posting has been broken for a few years. You're the first to
notice. ;-)

Here's the issue in a nutshell -- It's always a server issue. The WP cron
fires on a non-blocking HTTP request to itself, and if that doesn't work,
then your cron will never fire. I think a plugin like Core Control has the
tools to diagnose the issue for your server.

In 2.9.0, a late change to the curl implementation in the HTTP API ended up
breaking a good number of server setups. That was fixed in 2.9.1.