Girish,
In my case killing the task kills the installer and nothing continues. Upon a reboot ALMOST all vCenter services including SSO are started. I can get into vCenter and manage my host. However, I noticed Profile Driven Storage in not in the services and it's not there because after killing the installer it does not continue. Finding the Profile Driven Storage Installer and running it manually reports back with vCenter must be installed first? It off course is. Seems like a "Catch 22".
By the way this is for vSphere 5.1.1a
Tom