Thank you very much responses :)I'm going to try solution of downgrading kernel. The problem which appeared with this solution is fact that how to tell grub (2.0.2) which kernel I would like to use?. When I select (advanced options...) or press 'e' for edit I got a prompt for username and password but it always throw me away. Of course I think I'm using systems valid username/pass.
Maybe, I'm not going the right way. If so please to guide me. otherhow:)
