I am using Ubuntu 10.04 Lucid Lynx and I suddenly have an issue with Update Manager that I have been unable to resolve on my own. Package Manager and apt-get are not reporting any issues.

The error message is:
Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

Please report this bug against the 'update-manager' package and include the following error message:
'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
I could use some help in how to report or resolve it.

thanks,

From what I've seen this is caused by held packages when doing the upgrade, so did you do it? The upgrade.

Would be nice to see your /etc/apt/sources.list.

Can you tell me how to I find and resolve the held Packages.

I upgraded to Ubuntu 10.04 about 4 months ago and it has been working fine

The sources list file follows:

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository. This software is not part of Ubuntu, but is
## offered by Canonical and the respective vendors as a service to Ubuntu
## users.
deb http://archive.canonical.com/ubuntu lucid partner

# Line commented out by installer because it failed to verify:
# Line commented out by installer because it failed to verify:
# Line commented out by installer because it failed to verify:
# Line commented out by installer because it failed to verify:
# Line commented out by installer because it failed to verify:
# Line commented out by installer because it failed to verify:
deb http://us.archive.ubuntu.com/ubuntu/ lucid main universe restricted multiverse
deb http://security.ubuntu.com/ubuntu/ lucid-security universe main restricted multiverse
deb http://us.archive.ubuntu.com/ubuntu/ lucid-updates universe main restricted multiverse
deb http://ppa.launchpad.net/fta/ubuntu lucid main
deb-src http://archive.canonical.com/ubuntu lucid partner
deb http://download.webmin.com/download/repository sarge contrib
deb http://webmin.mirror.somersettechsol....uk/repository sarge contrib

Thanks,

See what's in /var/log/dist-upgrade/. What packages were being held back. Then remove them with Synaptic, but make a note of those packages, so you can reinstall them.