Just a short note for developers: I've delayed the initialisation of
$wgIP, so you can no longer use that variable, except for debugging.
Instead, use wfGetIP(). It's cached, so feel free to call it regularly.
See the commit notice for more details:
http://mail.wikipedia.org/pipermail/mediawiki-cvs/2005-September/011072.html
-- Tim Starling