Setting
gconf key /desktop/gnome/lockdown/disable_lock_screen=true
along with "password not asked on login" in System>Users and Groups and disabling "lock screen when screensaver is active" in Screensaver solved the problem.
But setting the gconf key to true completely disables the feature of lock screen.
Setting
gconf key /desktop/ gnome/lockdown/ disable_ lock_screen= true
along with "password not asked on login" in System>Users and Groups and disabling "lock screen when screensaver is active" in Screensaver solved the problem.
But setting the gconf key to true completely disables the feature of lock screen.