[Pacemaker] Problem with Depends and Conflicts - apt-get install pacemaker heartbeat - using backports.debian.org and www.backports.org

[Luana C. Rocha]

  Hi,

I'm experiencing some issues to install pacemaker on debian lenny:
This are my source.list

## main & security repositories
deb http://ftp.us.debian.org/debian/ lenny main
deb-src http://ftp.us.debian.org/debian/ lenny main
deb http://security.debian.org/ lenny/updates main
deb-src http://security.debian.org/ lenny/updates main

# ClusterLabs repository for HA components
#deb http://people.debian.org/~madkiss/ha lenny main
deb http://backports.debian.org/debian-backports lenny-backports main 
contrib non-free
deb http://www.backports.org/debian lenny-backports main contrib non-free

This a new install.
My system verion is i386 2.6.26-2-286 Debian Lenny

I had done this steps:

apt-get update
apt-get upgrade
apt-get install pacemaker heartbeat

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 to resolve the situation:
The following packages have unmet dependencies:
pacemaker: Depends: libcluster-glue but it is not going to be installed
                      Depends: libheartbeat2 (>= 1:3.0.3) but it is not 
going to be installed
                      Depends: cluster-agents but it is not going to be 
installed
E: Broken packages

I have tryed to install with cluster-glue and cluster-agents, but the 
dependency list grows up:

debian01:~# apt-get install pacemaker heartbeat cluster-glue cluster-agents
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 to resolve the situation:

The following packages have unmet dependencies:
   cluster-agents: Depends: libcluster-glue but it is not going to be 
installed
                   Conflicts: heartbeat (<= 2.99.2+sles11r9-5) but 
2.1.3-6lenny4        is to be installed
   cluster-glue: Depends: libcluster-glue but it is not going to be 
installed
                 Conflicts: heartbeat (<= 2.99.2+sles11r9-5) but 
2.1.3-6lenny4 is        to be installed
   pacemaker: Depends: libcluster-glue but it is not going to be installed
              Depends: libheartbeat2 (>= 1:3.0.3) but it is not going to 
be insta       lled
E: Broken packages

Someone can help to solve this problem?

Tks,

LCR