package libgucharmap7 1:3.0.1-0ubuntu1 failed to install/upgrade: trying to overwrite '/usr/lib/libgucharmap_2_90.so.7.0.0', which is also in package libgucharmap-2-90-7 1:3.1.92-0ubuntu1

[crtm]

today, after update, failed instalation

ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: libgucharmap7 1:3.0.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu1
AptOrdering:
 libgucharmap7: Install
 libgucharmap7: Configure
Architecture: amd64
Date: Mon Sep 19 16:03:43 2011
DpkgTerminalLog:
 Preparing to replace libgucharmap7 1:3.0.1-0ubuntu1 (using .../libgucharmap7_1%3a3.1.92-0ubuntu1_amd64.deb) ...
 Unpacking replacement libgucharmap7 ...
 dpkg: error processing /var/cache/apt/archives/libgucharmap7_1%3a3.1.92-0ubuntu1_amd64.deb (--unpack):
  trying to overwrite '/usr/lib/libgucharmap_2_90.so.7.0.0', which is also in package libgucharmap-2-90-7 1:3.1.92-0ubuntu1
DuplicateSignature:
 Unpacking replacement libgucharmap7 ...
 dpkg: error processing /var/cache/apt/archives/libgucharmap7_1%3a3.1.92-0ubuntu1_amd64.deb (--unpack):
  trying to overwrite '/usr/lib/libgucharmap_2_90.so.7.0.0', which is also in package libgucharmap-2-90-7 1:3.1.92-0ubuntu1
ErrorMessage: trying to overwrite '/usr/lib/libgucharmap_2_90.so.7.0.0', which is also in package libgucharmap-2-90-7 1:3.1.92-0ubuntu1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: gucharmap
Title: package libgucharmap7 1:3.0.1-0ubuntu1 failed to install/upgrade: trying to overwrite '/usr/lib/libgucharmap_2_90.so.7.0.0', which is also in package libgucharmap-2-90-7 1:3.1.92-0ubuntu1
UpgradeStatus: Upgraded to oneiric on 2011-09-16 (2 days ago)