Upgrade problem Ubuntu 10.10 to 11.04

[Diana]

Could not calculate the upgrade

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.

Have read other bugs of this nature, have tried removing:
xserver-xorg-video-nouveau
xserver-xorg-video-nouveau
as previously suggested, this got me from 10.04 to 10.10

I am now getting the same message when trying to upgrade to 11.04 and don't know how to find which packages are the problem.

will post the logs from var/log/dist-upgrade below

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/995365/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Fabio Marconi (fabiomarconi)]

Hello
try commenting out
deb http://extras.ubuntu.com/ubuntu maverick main #Third party developers repository
Thanks
Fabio
---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

[Diana (dianafair)]

sorry, still learning the interface here. Changed the mirror and commented out the source suggested and still no go.
Thanks.

[Fabio Marconi (fabiomarconi)]

In terminal:
sudo apt-get clean
sudo apt-get autoclean
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
And report if there's any error
---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

[Diana (dianafair)]

apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages have been kept back:
  adobe-flashplugin
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

[Diana (dianafair)]

apt-get dist-upgrade:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  adobe-flashplugin
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

[Fabio Marconi (fabiomarconi)]

in terminal
sudo apt-get remove --purge flashplugin-installer
sudo apt-get dist-upgrade
sudo apt-get install flashplugin-installer
---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

[Diana (dianafair)]

All these steps seemed to go well.

I have started the upgrade and it has progressed past the setting new software channels point which it hasn't in the past.

Seems to have fixed it. I will post again when the upgrade is complete.

Is it worth getting this looked at so that the error message is a little more helpful or at least points out the packages that it is having trouble with? It seems that there have been quite a lot of people that have come up against this.

Thank you so much for your help, it really is greatly appreciated!

[Launchpad Janitor (janitor)]

[Expired for update-manager (Ubuntu) because there has been no activity for 60 days.]