There seem to be a number of different bugs here. There are 2 reports of Xgl crashing when running glxinfo, on Savage & nVidia hardware. Can either of you test with Gutsy's version of Xgl? I cannot reproduce this here.
Two other people with savage cards see glxinfo crashing, but not under Xgl. This isn't an Xgl bug, and seems to be a duplicate of bug #45307 which appears to be fixed.
Finally, there's Tom with the "nvidia + Composite + OpenGL crashes X" bug #130325
There seem to be a number of different bugs here. There are 2 reports of Xgl crashing when running glxinfo, on Savage & nVidia hardware. Can either of you test with Gutsy's version of Xgl? I cannot reproduce this here.
Two other people with savage cards see glxinfo crashing, but not under Xgl. This isn't an Xgl bug, and seems to be a duplicate of bug #45307 which appears to be fixed.
Finally, there's Tom with the "nvidia + Composite + OpenGL crashes X" bug #130325