Removing author name, creation date or update date from all articles

In Joomla 1.5.9, I don't know why, but I have found that the global preference to hide author name, creation date and update, do not always work. Perhaps they have to be set early, before articles are written?

This certainly is the case with the Front Page.

Lmacd 00:45, 3 March 2009 (UTC)