Hi Finnur, thanks for your feedback on ESX 2.5.x and 3.x - While its interesting to note about the linux-2.4.x and linux-2.6.x issue, the main concern I had was something else... ( read below ) >>> ESX, the performance is very very bad. When I intsall RHES4 as guest >>> operating system under ESX, the performance is very good. It will be >>> that it has some problem CentOS to work with virtualization? this is the point I am most interested in, what / why is it that RHES4 will work fine and not CentOS4. - KB -- Karanbir Singh : http://www.karan.org/ : 2522219 at icq