Hello Linux Geeksters.
Yesterday, on the 9th of May, 2013, Ubuntu 10.04.04 Lucid Lynx, Ubuntu 11.10 Oneiric Ocelot and Ubuntu 8.04 Hardy Heron (server edition) have been officially declared obsolete. The development and update of the listed distrubution stopped, officially.
If you have an old computer and want to use an old, dead Ubuntu distribution, read this article and see what you have to do.
You can also update to the latest Ubuntu 13.04 Raring Ringtail, if your computer supports it.