I'm not even sure if your using Ubuntu.
Even the oldest version of Ubuntu that should still be around uses a later kernel than the one you're using (8.04 uses 2.6.24 but that is being retired next month as it's 5 years old).
This along with the fact that you don't seem to have any of the Ubuntu/Debian package management tools installed makes me think you may be on a different OS.
What's the output of...
Code:cat /etc/issue lsb_release -a