kde plasma disturbed while oo writer window has focus

[2MbF]

Binary package hint: openoffice.org

While oo writer window has focus, the graphical display of the kde plasma "Kontrollleiste" including widgets and k-menue becomes instable, icons are incompletely/faultly redrawn permanently. This also affects the terminal window (distorted characters, blending of window background and desktop background behind the window). While this takes place, the plasma process takes 10-85% cpu utilization every 5-10 seconds.
This does not happen while using oo spreadsheet.
But this also happens after saving an abiword document in .pdf file format.

oo 2.4.1 1.2.4.1-11ubuntu2.1
ubuntu 8.10 with latest updates as of 20081214 20:56
the system had been dist-upgraded from 8.04

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 8.10
NonfreeKernelModules: nvidia
Package: openoffice.org-core 1:2.4.1-11ubuntu2.1
ProcEnviron:
 PATH=/usr/lib/openoffice/program:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: openoffice.org
Uname: Linux 2.6.27-9-generic x86_64