How can i remove the typed urls that are stored in the url text field? I've tried to remove them using edit, preferences, config, prefs and then just delete them, choosed to save changes and restart. It doesnt work.... thanks!!

That won't work, the typed URLs are stored in variables which are written out to prefs.js when K-Meleon exits. There's currently a RFE in the bugs database to add a clear URL history button to the prefs menus which would address this.

River:

The following link will describes the 'method' to "Clear URLs from URL Bar Drop-Down Menu"

http://kmeleon.sourceforge.net/docs/delurls.php

Hope this helps.