Recently there was a post on the official Joomla! blogs about updating your Joomla! 1.5 site. It relates to the way that SEF is managed. Check it out here:
http://www.joomla.org/component/option,com_jd-wp/Itemid,105/p,462/
The change will also be included in the upcoming RC4!
Filed under: Joomla Updates, Joomla! 1.5 Development, Search Engine Optimisation
