kde4beta!

Voila !
j'ai installé kde4, les binaires en rpm, sur redhat 5.
en fait j'ai mis startkde dans .xinitrc
puis j'ai lancer startx, ça me donne les mêmes messages d'erreur.
Quelqu'un aurait'il une suggestion?
merci

[root@localhost bin]# startkde
kwmsound: error in loading shared libraries
/opt/kde/lib/libkdecore.so.0: undefined symbol: _vt.11QPushButton
kaudioserver: error in loading shared libraries
/opt/kde/lib/libkdecore.so.0: undefined symbol: _vt.11QPushButton
kcontrolkbgndwm: error in loading shared libraries
/opt/kde/lib/libkdecore.so.0: undefined symbol: _vt.11QPushButton
kwm: error in loading shared libraries
/opt/kde/lib/libkdecore.so.0: undefined symbol: _vt.11QPushButton
: error in loading shared libraries
: undefined symbol: _vt.6QFrame
[root@localhost bin]# krootwm: error in loading shared libraries
/opt/kde/lib/libkdecore.so.0: undefined symbol: _vt.11QPushButton
kfmkpanel: error in loading shared libraries
/opt/kde/lib/libkdeui.so.0: undefined symbol:
_vt.7QSlider.12QPaintDevice
: error in loading shared libraries
/opt/kde/lib/libkdeui.so.0: undefined symbol:
_vt.7QSlider.12QPaintDevice

A+
Frédo