[wp-hackers] Why no automatic database upgrade?

[Dion Hulse (dd32)]

On 27 July 2012 01:37, David Anderson <david at wordshell.net> wrote:
>
> On 26/07/12 15:00, wp-hackers-request at lists.automattic.com wrote:
>>
>> It is actually done automatically for hte majority of users when they use
>> the built in Core Upgrader, It's only those who are using SVN or manually
>> updating who ever see the screen.
>
> Thanks... I'm a bit puzzled here - something must be malfunctioning. Before
> I started building WordShell I always used the built in Core Upgrader; but
> I've got to see the 'database upgrade required' screen quite often. This is
> across quite a variety of sites and servers. Is there any other reason why
> it might not take place automatically?

This could point to an issue in the WP_HTTP library, specifically,
that loopback connections from WordPress to WordPress are failing.
Does Cron fire correctly for you? (ie. do scheduled posts post?)