Did sort out the problem?
There were loads of problems with The latest version of Joomla during the summer, most I believe have been ironed out, however this was after many weeks of people complaining about the shortcomings of v1.5, which was met by an apparent arrogant and holier-than-thou attitude from the admin and development team.
I was on the verge of giving up and trying something else when things suddenly got resolved. If I have any more problems I'll be moving
DaveySpeedstar.com onto something like Drupal.
I you download the latest version of v1.5, and reinstall it again from scratch.
For smaller websites I agree with sch3lp, Wordpress is a dream to work with. It may be promoted as blogging software, but it's so adaptable and it is so well supported with plug-ins etc, its a really good CMS. The only reason I moved my site away from WP is because my site was getting too unwieldy.