Suse 10.2 VNC-connection performance problem

Installed Suse 10.2 with kde. Configured remote access (Applications ->System -> Remote Access -> Desktop Sharing - krfb) using YaST.
The remote access is possible through VNC or/and Eggplant 4.x.
However Suse Desktop Sharing is using full CPU capacity and makes remote work inpossible.

As a workaround, I’ve tried Xvnc using vncserver-command (skript), but could not get a kde-desktop environment work.

Have googled but could not find any good advice.

Did anyone face same problem and could solve it?
Many thanks for your help!