Upgrade from 10.04 to 10.10 fails

[Rolf Pedersen]

Binary package hint: update-manager

Using update manager to upgrade from 10.04 to 10.10, I get the message, "Could not calculate the upgrade".
And further:
"An unresolvable problem occurred while calculating the upgrade:
E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

 This can be caused by:
 * Upgrading to a pre-release version of Ubuntu
 * Running the current pre-release version of Ubuntu
 * Unofficial software packages not provided by Ubuntu

If none of this applies, then please report this bug against the 'update-manager' package and include the files in /var/log/dist-upgrade/ in the bug report."

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: update-manager 1:0.134.11
ProcVersionSignature: Ubuntu 2.6.32-28.55-generic-pae 2.6.32.27+drm33.12
Uname: Linux 2.6.32-28-generic-pae i686
Architecture: i386
Date: Sat Feb 26 11:17:10 2011
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: update-manager

[RedSingularity (redsingularity)]

Duplicate of master bug 721306. Marking.