Default web browser

[Sundar Dhanasekaran]

Hi,

I had changed my default web browser from konqueror to firefox.  Still 
when I click a link it keeps opening in konqueror. My default applcation 
on System setting --> Default Application --> Web Browser shows for http 
& https url use 'firefox'

Also only few options like email client, web browser, IM, Terminal 
Emulator are available for change in System setting --> Default 
applications.  How do I change for the rest like associations with mp3, 
pdf etc.

-Sundar