error while system upgrade: failed to install/upgrade: unable to install new version of `./usr/share/doc/compizconfig-backend-gconf/copyright': Is a directory

[misiu_mp]

Binary package hint: compizconfig-backend-gconf

While running
   aptitude upgrade

dpkg: error while cleaning up:
 unable to remove newly-installed version of `/usr/share/doc/compizconfig-backend-gconf/copyright' to allow reinstallation of backup copy: Directory not empty
Errors were encountered while processing:
 /var/cache/apt/archives/compizconfig-backend-gconf_0.8.2-0ubuntu2_i386.deb

Text created by the bug reporting tool:
package compizconfig-backend-gconf 0.8.2-0ubuntu1 [modified: usr/lib/compizconfig/backends/libgconf.so usr/lib/compizconfig/backends/libgconf.a usr/share/doc/compizconfig-backend-gconf/AUTHORS usr/share/doc/compizconfig-backend-gconf/changelog.Debian.gz] failed to install/upgrade: unable to install new version of `./usr/share/doc/compizconfig-backend-gconf/copyright': Is a directory

Running Ubuntu 9.04
Package versions (compizconfig-backend-gconf):
  Installed: 0.8.2-0ubuntu1
  Candidate: 0.8.2-0ubuntu2

ProblemType: Package
Architecture: i386
DistroRelease: Ubuntu 9.04
ErrorMessage: unable to install new version of `./usr/share/doc/compizconfig-backend-gconf/copyright': Is a directory
Package: compizconfig-backend-gconf 0.8.2-0ubuntu1 [modified: usr/lib/compizconfig/backends/libgconf.so usr/lib/compizconfig/backends/libgconf.a usr/share/doc/compizconfig-backend-gconf/AUTHORS usr/share/doc/compizconfig-backend-gconf/changelog.Debian.gz]
SourcePackage: compizconfig-backend-gconf
Title: package compizconfig-backend-gconf 0.8.2-0ubuntu1 [modified: usr/lib/compizconfig/backends/libgconf.so usr/lib/compizconfig/backends/libgconf.a usr/share/doc/compizconfig-backend-gconf/AUTHORS usr/share/doc/compizconfig-backend-gconf/changelog.Debian.gz] failed to install/upgrade: unable to install new version of `./usr/share/doc/compizconfig-backend-gconf/copyright': Is a directory
Uname: Linux 2.6.28-11-generic i686