"An unresolvable problem occurred while calculating the upgrade" when upgrading from 10.10 to 11.04

[Kazik]

When trying to upgrade from 10.10 to 11.04 (sudo update-manager -d), I am getting following error message:
An unresolvable problem occurred while calculating the upgrade:
E:Błąd, pkgProblemResolver::Resolve zwrócił błąd, może to być spowodowane zatrzymanymi pakietami.

 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

[Martin Schaaf (mascha)]

I have the same problem. I have the following error message:

The following packages have unmet dependecies:
 openoffice.org-common : Stört: openoffice.org-dmaths (< 1:3.3.0-7) aber 3.2-1 soll installiert werden

Uninstalling openoffice.org-dmaths solves the problem.