I found the problem why the "Remember my login" checkbox had stopped
working on my site. I had secured the MediaWiki login page with SSL
(https), and as a result, cookies were being created as secure, which
made them inaccessible to the regular http site. Thus, I lost my session
and got handed a new one.
To prevent this, I set $wgCookieSecure = false in LocalSettings.php, and
all is well.
If anyone is interested in my secure login page "extension," here it is,
ready for inclusion in LocalSettings.php:
http://meta.wikimedia.org/wiki/Help:Configuration_tips_and_tricks#HTTPS_
on_Login_only
- DanB
(maiden_taiwan on
meta.wikimedia.org)