Somehow I found that Gutsy is a bit slow for me, and I reinstalled Feisty. I don't know why, but now my upper menu bar is english, but the submenus are hungarian, as they should be. And the second time I wanted to boot the new Feisty, it froze.
Another thing, that came up: partitioning the winchester: if not automated, you have to make 2 real and a logical partition.
device /dev/sda1 directory / type ex3 size 15000 MB
device /dev/sda2 directory /home type ex3 size 65000 MB
device /dev/sda5 directory type swap size 2500 MB (logical, at the end)