package gnome-themes-standard (not installed) failed to install/upgrade: trying to overwrite '/usr/share/themes/LowContrast/gtk-2.0/gtkrc', which is also in package gnome-accessibility-themes-extras 2.32.1-0ubuntu1

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Binary package hint: gnome-themes-standard

After installing several themes, backgrounds and icon sets problem started. Several installed icons appear as not installed

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: gnome-themes-standard (not installed)
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
AptOrdering:
 gnome-themes-standard: Install
 gnome-themes-standard: Configure
Architecture: i386
Date: Wed Apr 20 17:16:51 2011
DpkgTerminalLog:
 Unpacking gnome-themes-standard (from .../gnome-themes-standard_2.91.93-1_i386.deb) ...
 dpkg: error processing /var/cache/apt/archives/gnome-themes-standard_2.91.93-1_i386.deb (--unpack):
  trying to overwrite '/usr/share/themes/LowContrast/gtk-2.0/gtkrc', which is also in package gnome-accessibility-themes-extras 2.32.1-0ubuntu1
ErrorMessage: trying to overwrite '/usr/share/themes/LowContrast/gtk-2.0/gtkrc', which is also in package gnome-accessibility-themes-extras 2.32.1-0ubuntu1
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100831.2)
SourcePackage: gnome-themes-standard
Title: package gnome-themes-standard (not installed) failed to install/upgrade: trying to overwrite '/usr/share/themes/LowContrast/gtk-2.0/gtkrc', which is also in package gnome-accessibility-themes-extras 2.32.1-0ubuntu1
UpgradeStatus: Upgraded to natty on 2011-04-20 (1 days ago)