Joomla 1.5.23 was recently released (Apr 5, 2011) and we recommend that everyone running Joomla 1.5 upgrade their version to Joomla 1.5.23 A.S.A.P. Joomla 1.5.23 is a security release and contains a number of bug fixes as well.
Click here to see our tutorial on how to properly upgrade your Joomla site to Joomla 1.5.23.
All of our tutorials are published under the Creative Commons Attribution-NonCommercial license. This means: