pbx1:/home/de_mon# aptitude -t stable install libmyodbc odbcinst1 odbcinst1debian1; apt-cache policy libmyodbc odbcinst1 odbcinst1debian1
Reading Package Lists... Done
Building Dependency Tree
Reading extended state information
Initializing package states... Done
E: Unable to correct problems, you have held broken packages.
E: Unable to correct dependencies, some packages cannot be installed
E: Unable to resolve some dependencies!
Some packages had unmet dependencies.  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 packages have unmet dependencies:
  libmyodbc: Depends: odbcinst1 but it is not installable
libmyodbc:
  Installed: (none)
  Candidate: 3.51.11-6
  Version Table:
     3.51.11-6 0
        500 http://debian.lcs.mit.edu unstable/main Packages
        100 /var/lib/dpkg/status
     3.51.09-1 0
        500 http://debian.lcs.mit.edu stable/main Packages
odbcinst1:
  Installed: (none)
  Candidate: 2.2.4-11
  Version Table:
     2.2.4-11 0
        500 http://debian.lcs.mit.edu stable/main Packages
        100 /var/lib/dpkg/status
odbcinst1debian1:
  Installed: 2.2.11-13
  Candidate: 2.2.11-13
  Version Table:
 *** 2.2.11-13 0
        500 http://debian.lcs.mit.edu unstable/main Packages
        100 /var/lib/dpkg/status