Manual talk:Upgrading to 1.8

Please do not post support questions here.

Instead, use one of these channels:

Further options for contacting appropriate people can be found at Communication .

Responses to common questions

memcached stops working

You're using an old version of memcached. Upgrade.

MediaWiki namespace stops working

Touch the LocalSettings.php file to clear caches

Can I use a database from 1.8 with an older version, like 1.6?

No.

Need an upgrade FAQ for some of the common recurring support questions that can't be covered in the main documentation page
Might need to increase the standard protection level to stop well-meaning users from messing up the documentation