Installed ubuntu 10.4 LTS on the dell server R710 after that want to upgrade, hence executed
# sudo apt-get update
# sudo apt-get upgrade
sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages have been kept back:
linux-headers-server linux-image-server linux-server
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
above packages did not get install , should manually install please suggest.