Above is a screen shot of the problem, this was taken in Firefox 3.6.3 for Mac
Here's my vital statistics:
JoomlaCK Version: 3.1
Database Version:5.0.90-community
Database Collation:latin1_swedish_ci
PHP Version:5.2.9
Web Server:Apache
Web Server to PHP interface:cgi
Joomla! Version:Joomla! 1.5.17 Stable [ Wojmamni ama woobusani ] 27-April-2010 04:00 GMT
User Agent:Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-GB; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3
I have tried clearing the browser cache. I will now try on Safari.