Thanks for the feedback. I changed the 1 to a yes-it could only do good, so what the heck. I found a new command thats given me some more insight. ##FROM XDPYINFO number of extensions: 32 BIG-REQUESTS DAMAGE DOUBLE-BUFFER DPMS Extended-Visual-Information GLX LBX MIT-SCREEN-SAVER MIT-SHM MIT-SUNDRY-NONSTANDARD NV-CONTROL NV-GLX RANDR RECORD RENDER SECURITY SHAPE SYNC TOG-CUP X-Resource XC-APPGROUP XC-MISC XFIXES XFree86-Bigfont XFree86-DGA XFree86-Misc XFree86-VidModeExtension XINERAMA XInputExtension XKEYBOARD XTEST XVideo >From what I've read, "NVIDIA-GLX" should be included there. I'm running the newest NVIDIA driver by the way. Maybe this is similar to the other emails going around about the Mesa libGL files? Thanks again, Scott