Turns out there is a set of
ppl out there experiencin' the same thing. The long and the short of
it is that the server edition uses a different kernel. The fix is
either to apt or yum to get a simpler kernel or to use the alternate
CD set to achieve the same end.

SEE: www.ubuntuforums.org/showthread.php?t=185196

http://ubuntuforums.org/showthread.php?t=305670

also: "This appears to be bug #48266."