So… I’m using Kubuntu, but instead of every URL opening in Konqueror I want them to open in Firefox… The Debian way is to use the update-alternatives command (
update-alternatives --config x-www-browser), but for some reason this doesn’t affect Kopete… Everything else opens URLs nicely in Firefox, but Kopete stubbornly continues to fire up Konqueror. Turns out that in
System Settings -> KDE Components you can set the default browser there too, and lo! now Kopete opens links in FF as it should. Marvellous.