Font protocol dies unexpectedly

[edward]

Hi all,
I rencently installed an i386 box under 5.3 Release, with Xorg 6.7.0_1 
and KDE 3.3.0_4. I have been trying to add fonts, but when I click on 
the "Fonts" bookmark in Konqueror, or when I access the "Font Installer" 
pannel in KDE's Control Center, I get the following message :
"The process for the fonts protocol died unexpectedly".
I'm not quite sure if this is an Xorg or a KDE issue and how to fix it.
Any idea ?
Edward