Changing file associations for Firefox

[bestiarosa]

Hello,
I'm sorry if this question has been asked before. I even tried to google it and realized this is a quite common issue but I didn't get any satisfactory answer.
I've installed Firefox and I want Mandrake to open html links (in Kmail for instance) with it instead of using Konqueror. So I open the File Association utility and I choose html, then I remove Konqueror and add Firefox:

/usr/local/firefox/firefox %u

But every time I shut down the computer, the system forgets the association and this is really nasty because every time I have to restore it manually. Is there a way to make it remember the association?

[bestia_rosa]

Please help! I've been googling for days without finding a real (i.e. that works) answer. Mandriva just keeps forgetting whichever association with html files.

Is there a solution or is it a Mandrake bug?