[opensuse] KMail suddenly opens links with Quanta instead of Firefox

Running SLED 11 with Gnome. Using Kmail as mail client. Installed Quanta Plus 3.5.9 for web authoring. Now Kmail uses Quanta to open URL's instead of Firefos as i used to. I cant seem to find the place where Kmail stores what software to use. Gnome is set to use Firefox. -- /Rikard Johnels