I have successfully installed via FAM. Now I realize that before the update was not proper. Also eventhough an update shown in HAM, I was not able to update because of meory issue(its since long time and so I use FAM). Now uname -a shows 2.6.28.10-cssu1

Those who tried to help me, a big thanks for respoding to my foolish questions. but beleive me , now only I realize those were too stupid questions.