package sugar-session-0.90 (not installed) failed to install/upgrade: trying to overwrite '/usr/share/xsessions/sugar.desktop', which is also in package sugar-session-0.88 0.88.1-4ubuntu1

[baldy4eva]

11.04 trying to update sugar and it hung

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: sugar-session-0.90 (not installed)
ProcVersionSignature: Ubuntu 2.6.38-13.53-generic 2.6.38.8
Uname: Linux 2.6.38-13-generic i686
Architecture: i386
Date: Fri Jan 13 18:08:33 2012
DpkgTerminalLog:
 Unpacking sugar-session-0.90 (from .../sugar-session-0.90_0.90.3-1_all.deb) ...
 dpkg: error processing /var/cache/apt/archives/sugar-session-0.90_0.90.3-1_all.deb (--unpack):
  trying to overwrite '/usr/share/xsessions/sugar.desktop', which is also in package sugar-session-0.88 0.88.1-4ubuntu1
ErrorMessage: trying to overwrite '/usr/share/xsessions/sugar.desktop', which is also in package sugar-session-0.88 0.88.1-4ubuntu1
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
SourcePackage: sugar-0.90
Title: package sugar-session-0.90 (not installed) failed to install/upgrade: trying to overwrite '/usr/share/xsessions/sugar.desktop', which is also in package sugar-session-0.88 0.88.1-4ubuntu1
UpgradeStatus: Upgraded to natty on 2012-01-13 (0 days ago)