Be sure to include which kind of linux you are using (e.g. Ubuntu, Fedora, etc.)
Also include the standard Axiom banner that prints on startup. The most important pieces of information are the two banner lines:
Version: Axiom (March 2011)
Timestamp: Wednesday May 25, 2011 at 16:08:58
This give me some clue about which version of the source code you are using (March 2011) and when it was compiled (May 25 at 16:08:58)