resize konsole and screen bug with little white point

resize konsole and screen bug with little white point.
That appear only with konsole! and I need restart to resolve this bug.

Linux P5QC 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
Description: Ubuntu 11.04
Release: 11.04
konsole:
  Installé : 4:4.6.2-0ubuntu1
  Candidat : 4:4.6.2-0ubuntu1
 Table de version :
 *** 4:4.6.2-0ubuntu1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status
kate: /usr/share/kde4/services/katekonsoleplugin.desktop
konsole: /usr/bin/konsoleprofile
kate: /usr/share/kde4/apps/kate/plugins/katekonsole/ui.rc
konsole: /usr/share/doc/kde/HTML/en/konsole/common
konsole: /usr/share/doc/konsole/changelog.Debian.gz
konsole: /usr/lib/kde4/libkdeinit/libkdeinit4_konsole.so
kdevplatform3-libs: /usr/share/kde4/services/kdevkonsoleview.desktop
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/plasma_runner_konsolesessions.mo
plasma-widgets-addons: /usr/lib/kde4/plasma_applet_konsoleprofiles.so
ncurses-term: /usr/share/terminfo/s/screen-bce.konsole
ncurses-term: /usr/share/terminfo/k/konsole-vt100
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/katekonsoleplugin.mo
kate: /usr/lib/kde4/katekonsoleplugin.so
ncurses-term: /usr/share/terminfo/k/konsole
language-pack-kde-en-base: /usr/share/locale-langpack/en_CA/LC_MESSAGES/konsole.mo
ncurses-term: /usr/share/terminfo/k/konsole-256color
ncurses-term: /usr/share/terminfo/k/konsole-xf3x
konsole: /usr/share/kde4/apps/konsole/konsoleui.rc
ncurses-term: /usr/share/terminfo/k/konsole-xf4x
konsole: /usr/share/kde4/apps/konsole/linux.keytab
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/konsole/tabbar.png
ncurses-term: /usr/share/terminfo/k/konsole-vt420pc
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/konsole/index.docbook
konsole: /usr/share/kde4/apps/konsole/WhiteOnBlack.schema
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/konsole.mo
apparmor: /etc/apparmor.d/abstractions/ubuntu-konsole
konsole: /usr/share/kde4/apps/konsole/BlackOnWhite.schema
konsole: /usr/share/kde4/apps/konsole/BlackOnLightYellow.schema
app-install-data: /usr/share/app-install/desktop/kde4___konsole.desktop
konsole: /usr/share/doc/kde/HTML/en/konsole
konsole: /usr/share/applications/kde4/konsole.desktop
konsole: /usr/share/kde4/apps/konsole/Linux.colorscheme
konsole: /usr/lib/kde4/libkonsolepart.so
konsole: /usr/share/kde4/services/ServiceMenus/konsolehere.desktop
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/plasma_runner_konsolesessions.mo
ncurses-term: /usr/share/terminfo/s/screen.konsole
kubuntu-docs: /usr/share/doc/kde/HTML/en/images/C/konsole.png
konsole: /usr/share/kde4/apps/konsole/BlackOnRandomLight.colorscheme
konsole: /usr/share/lintian/overrides/konsole
konsole: /usr/share/kde4/apps/konsole/sessionui.rc
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/kdevkonsole.mo
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/konsolekalendar.mo
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/konsole.mo
konsole: /usr/share/kde4/apps/konsole/partui.rc
language-pack-kde-en-base: /usr/share/locale-langpack/en_AU/LC_MESSAGES/kdevkonsole.mo
konsole: /usr/share/doc/konsole
python: /usr/share/apps/konsole
konsole: /usr/share/kde4/apps/konsole/GreenOnBlack.colorscheme
playonlinux: /usr/share/playonlinux/bash/terminals/konsole
konsole: /usr/lib/libkonsoleprivate.so
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/katekonsoleplugin.mo
konsole: /usr/share/kde4/apps/konsole/solaris.keytab
language-pack-kde-en-base: /usr/share/locale-langpack/en_GB/LC_MESSAGES/kdevkonsole.mo
konsole: /usr/share/doc/konsole/copyright
konsole: /usr/share/kde4/apps/konsole/konsole.notifyrc
ncurses-term: /usr/share/terminfo/k/konsole-base
kate: /usr/share/kde4/apps/kate/plugins/katekonsole
kdevplatform3-libs: /usr/lib/kde4/kdevkonsoleview.so
konsole: /usr/share/kde4/apps/konsole/DarkPastels.colorscheme
konsole: /usr/share/doc/kde/HTML/en/konsole/index.cache.bz2
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/konsole/index.cache.bz2
konsole: /usr/share/kde4/apps/konsole/Shell.profile
language-pack-kde-en-base: /usr/share/locale-langpack/en_AU/LC_MESSAGES/plasma_runner_konsolesessions.mo
ncurses-term: /usr/share/terminfo/k/konsole-linux
ncurses-term: /usr/share/terminfo/k/konsole-16color
konsole: /usr/share/kde4/apps/konsole/README.KeyTab
konsole: /usr/share/kde4/services/konsolepart.desktop
konsole: /usr/share/doc/kde/HTML/en/konsole/index.docbook
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/konsole/konsole.png
python: /usr/share/apps/konsole/python.desktop
app-install-data: /usr/share/app-install/desktop/kde4___konsolekalendar.desktop
konsole: /usr/bin/konsole
ncurses-term: /usr/share/terminfo/k/konsole+pcfkeys
konsole: /usr/share/kde4/apps/konsole
language-pack-kde-fr-base: /usr/share/locale-langpack/fr/LC_MESSAGES/konsolekalendar.mo
ncurses-term: /usr/share/terminfo/k/konsole-solaris
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/konsole
konsole: /usr/share/kde4/apps/konsole/default.keytab
plasma-widgets-addons: /usr/share/kde4/services/plasma-applet-konsoleprofiles.desktop
kde-l10n-fr: /usr/share/doc/kde/HTML/fr/konsole/common

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: konsole 4:4.6.2-0ubuntu1 [modified: usr/bin/konsole usr/lib/kde4/libkdeinit/libkdeinit4_konsole.so usr/lib/libkonsoleprivate.so]
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Tue Jun 28 10:37:06 2011
EcryptfsInUse: Yes
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
ProcEnviron:
 LANGUAGE=fr_CH:fr
 LANG=fr_CH.UTF-8
 SHELL=/bin/bash
SourcePackage: kdebase
UpgradeStatus: No upgrade log present (probably fresh install)