Xfce 4.4 - Icon problem

[roger]

Hi guys,

I just downloaded the fat tarball of Xfce 4.4 beta 1 and compiled it from 
source (I didn't use any installer).
Basically I compiled everything except exo, mousepad, Terminal and Thunar (I 
plan to see for those later on); then I installed gtk-xfce-engine in /usr and 
the rest in /usr/local, on top of the previous Xfce 4.2 (I didn't remove 
anything prior to this new installation).

Xfce 4.4 seems to start properly, the panel is there, as well as xfdesktop and 
xfwm. However, I have problems with icons - see 
http://rmlx.dyndns.org/misc/Screenshot.png

I created a few panel launchers. They work fine but no icons are displayed. 
Besides, the Setting Manager only displays a couple of icons!? Changing 
(general) Themes using the User Interface Preferences GUI seems to work 
flawlessly. However, nothing happens whatever Icon Theme I choose.

Any pointer would be appreciated.
I'm running Mandriva 2006 on 32-bit x86.

Many thanks for your great work,
Roger