To find out what version of the software your workstation is running, type:
This will return something like the following:
This tells you the name of the metapackage (debathena-workstation) and the base operating system (Ubuntu 9.04).
If you have an older workstation, you may see something like the following:
In the example above, the workstation is running Athena 9.4, patchlevel 53.