The KM version 1.5.4 again proposes firefox 2 as user agent. Crazy. I need higher version of firefox on some websites (www.pluzz.fr or yahoo mail). I downloaded the non official version of Fred (KM 17 alpha) which works but has two bugs:
- no password remembering (file "number".s in official Kmeleon profiles folder)
- no possibility to create new key with about:config
Have you any solution?

You can add own user agents.
The two default ones are here:
..programs.../K-Meleon/defaults/prefs/I10n.js

Make a copy of that file, name it "myuseragents.js" (or whatever you like), then open it with notepad, and throw out everything except the two user agents. Take them as example for more ones. Just copy/paste and adjust the new ones as you wish. Important: The number sequence must have no "holes", that means if you have UA number5, there must also exist a 1+2+3+4.

Quote
bamboum
- no possibility to create new key with about:config

Try to replace intl.xpt from oficial 1.5.4 build. Maybe that will work.