X freeze after lesson 5 code(nehe.gamedev.net) run for a while(couple seconds), on all linux version(glut, glx and sdl) other lessons run ok, computer run Fedora 9 with sis 630, with dri enabled(tuxracer run ok, chromium run but slow),
what kind of problem it is? code seems ok, if only draw one triangle(on sdl) then it is ok,
Thanks