thank you guys for helpful advices. i will check things out tomorow... seems like it is firmware issue as Josip Rodin wrote.
by the way: i will probably need to pass all those installation screens again and here comes my little question: is it possible to change the terminal mode during install or whatsoever to see any "highlighting belt"? i do not see any indicator choosing options, so I need to count keystrokes and finally I am not quite sure if I pointed the right one. :) best regards, mikie