uh, now it's ok, i changed nothing in xorg.conf, just cutted "ati radeon" from VIDEO_CARDS in make.conf and reemerged ati-drivers, now:
$ fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: RADEON 9250/9200 Series DDR Generic
OpenGL version string ...