Comment 5 for bug 773022

Hello everybody.
I was stuck at the same problem, but got to fix it now.
I just want to tell you what I did, maybe it also works for you.

After the failed upgrade process to 11.04 I was still able to get to the (slight damaged) 10.04 desktop, where I could uninstall the cwp plasmoid using "sudo dpkg -r kde-plasmoid-cwp".
Then I opened "/var/lib/dpkg/status" and "/var/lib/dpkg/available" and was looking for the keyword "kde-plasmoid-cwp". The word after priority is "low" which I changed to "optional".
After that the distribution upgrade using the command "sudo do-release-upgrade" was working as expected and after a reboot everything was just OK.

Just for those who have the same problem. You could also try to edit those two files, but I will take no responsibility :-).

Good luck,
kind regards