Did you manually install agents?
Yes, I installed MS Agents some weeks ago, trying to get the Spanish language...
But I don't think this is the problem, as I told, I have installed mIRC 7.22 in a fresh XP Professional SP3, this time WITHOUT installing MS Agent and I get the same problem with the languages combo.
Can someone with a non english OS tell if he/she have the same bug? Probably this bug occurs in OS different from English