mono-runtime stuck in Update Manager

[George Standish]

Binary package hint: mono

Update Manager shows mono-runtime but it is non-selectable.

apt-cache policy mono-runtime
mono-runtime:
  Installed: 2.4.3+dfsg-1ubuntu2
  Candidate: 2.4.4~svn151842-1ubuntu2
  Version table:
     2.4.4~svn151842-1ubuntu2 0
        500 http://ca.archive.ubuntu.com lucid/main Packages
 *** 2.4.3+dfsg-1ubuntu2 0
        100 /var/lib/dpkg/status

sudo apt-get install mono-runtime
[sudo] password for USERNAME:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help resolve the situation:

The following packages have unmet dependencies:
  mono-runtime: Depends: mono-gac (= 2.4.4~svn151842-1ubuntu2) but 2.4.3+dfsg-1ubuntu2 is to be installed
E: Broken packages

ProblemType: Bug
Architecture: amd64
Date: Sun Feb 28 03:36:26 2010
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100215.1)
NonfreeKernelModules: nvidia
Package: mono-runtime 2.4.3+dfsg-1ubuntu2
ProcEnviron:
 PATH=(custom, user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-14.20-generic
SourcePackage: mono
Uname: Linux 2.6.32-14-generic x86_64

[Harry (harry33)]

George,

this is due to the fact that the amd64 packages have been published (status: done) and are downloadable from the repos.
However, the i386 (32-bit) packages have not yet been published (status: new).

You should merely just wait for the publication. Or go directly to the appropriate launchpad page and download them and install with dpkg.