Hello, I used to have the same problem (i.e. backtracing to the same point) any time I launched a program that presumably made use of the GLX extension (I tried glxgears, beryl and stepmania). xserver-xorg-core was recently updated from 2:1.3.0.0.dfsg-12lenny1 to 2:1.3.0.0.dfsg-12lenny2 . If you built your nvidia module by yourself (e.g. with the official driver but probably also with module-assistant), you'll need to re-build it against the new X version so that it operates correctly. The error in Xorg's log announcing that the GLX extension could not be started should disappear and your programs should work again. Regards, Xr |