package murrine-themes 0.98.2ubuntu1 failed to install/upgrade: trying to overwrite '/usr/share/themes/greybird/gtk-2.0/resize_grip.png', which is also in package xubuntu-artwork 11.10.0

[RajaSekharReddy Genupula]

i have downloaded them , hope they are install . but while desktop starting i ma getting this as a crash report

ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: murrine-themes 0.98.2ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
Uname: Linux 3.0.0-8-generic i686
Architecture: i386
Date: Sun Aug 21 08:41:06 2011
DuplicateSignature:
 Unpacking replacement murrine-themes ...
 dpkg: error processing /var/cache/apt/archives/murrine-themes_0.98.2_all.deb (--unpack):
  trying to overwrite '/usr/share/themes/greybird/gtk-2.0/resize_grip.png', which is also in package xubuntu-artwork 11.10.0
ErrorMessage: trying to overwrite '/usr/share/themes/greybird/gtk-2.0/resize_grip.png', which is also in package xubuntu-artwork 11.10.0
InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110705)
PackageArchitecture: all
SourcePackage: murrine-themes
Title: package murrine-themes 0.98.2ubuntu1 failed to install/upgrade: trying to overwrite '/usr/share/themes/greybird/gtk-2.0/resize_grip.png', which is also in package xubuntu-artwork 11.10.0
UpgradeStatus: Upgraded to oneiric on 2011-08-21 (4 days ago)

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #833538, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.