package sugar-session-0.90 0.90.3-1 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

[Jerry]

may have some thing to do with USR?
dependency hell between the two, IIRC

going from 0.88 to 0.90 and got errors on the install/
so remove USR and then things may have installed. I've not tried running it yet...

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: sugar-session-0.90 0.90.3-1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic-pae 2.6.38
Uname: Linux 2.6.38-7-generic-pae i686
NonfreeKernelModules: nvidia wl
Architecture: i386
Date: Tue Apr 5 07:44:47 2011
DpkgTerminalLog:
 Unpacking sugar-session-0.90 (from .../sugar-session-0.90_0.90.3-1_i386.deb) ...
 dpkg: error processing /var/cache/apt/archives/sugar-session-0.90_0.90.3-1_i386.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 0.90.3-1 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 2011-04-01 (4 days ago)