kscreensaver freeze

[Raph]

Binary package hint: kdeartwork

when kscreensave start with wind space effect after a moment it freeze. But if you move your mouse or keyboard it come back to desktop normally

Linux desktop 2.6.32-25-generic #45-Ubuntu SMP Sat Oct 16 19:48:22 UTC 2010 i686 GNU/Linux

Description: Ubuntu 10.04.1 LTS
Release: 10.04
kscreensaver:
  Installé : 4:4.4.2-0ubuntu1
  Candidat : 4:4.4.2-0ubuntu1
 Table de version :
 *** 4:4.4.2-0ubuntu1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ lucid/universe Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: kscreensaver 4:4.4.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-25.45-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic i686
Architecture: i386
Date: Sun Oct 24 16:07:42 2010
InstallationMedia: Kubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.2)
ProcEnviron:
 LANGUAGE=
 LANG=fr_CH.utf8
 SHELL=/bin/bash
SourcePackage: kdeartwork