package libatk-adaptor-schemas (not installed) failed to install/upgrade: trying to overwrite '/usr/share/glib-2.0/schemas/org.a11y.atspi.gschema.xml', which is also in package libatk-adaptor 2.2.1-0ubuntu1

[Riccardo Luciani]

After uninstalling KDE on Ubuntu 12.04 Beta2, the above error appears

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libatk-adaptor-schemas (not installed)
ProcVersionSignature: Ubuntu 3.2.0-20.33-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
NonfreeKernelModules: fglrx
ApportVersion: 1.95-0ubuntu1
AptOrdering:
 libatk-adaptor-schemas: Install
 libatk-adaptor-schemas: Configure
 ubuntu-desktop: Configure
Architecture: i386
Date: Sat Mar 31 11:40:36 2012
ErrorMessage: trying to overwrite '/usr/share/glib-2.0/schemas/org.a11y.atspi.gschema.xml', which is also in package libatk-adaptor 2.2.1-0ubuntu1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
SourcePackage: at-spi2-atk
Title: package libatk-adaptor-schemas (not installed) failed to install/upgrade: trying to overwrite '/usr/share/glib-2.0/schemas/org.a11y.atspi.gschema.xml', which is also in package libatk-adaptor 2.2.1-0ubuntu1
UpgradeStatus: Upgraded to precise on 2012-03-29 (1 days ago)