Rviz closing just after being run, problems with NVidia driver

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After localizing and temporarily solving an SSE3-issue with openni_camera (ticket #4870) I'm facing another issue (I'm mentioning this in case this can leave a hint for the next one).

I cannot run rviz, the process simply closes after running rosrun rviz rviz. I'm on Diamondback, Maverick, running AMD Sempron 3100+ processor and a nVidia Corporation C51G [GeForce 6100] (rev a2) graphics card.

I created a launchfile to run rviz with GDB, and here is what I'm getting. Any clues?

Reading symbols from /home/user/ros/visualization/rviz/bin/rviz...done.
Starting program: /home/user/ros/visualization/rviz/bin/rviz __name:=rviz __log:=/home/user/.ros/log/908294b8-4ef6-11e0-9e3d-001d7e94a572/rviz-2.log
[Thread debugging using libthread_db enabled]
[New Thread 0xb6cf0b70 (LWP 8181)]
[New Thread 0xb64efb70 (LWP 8183)]
[New Thread 0xb5ceeb70 (LWP 8184)]
[New Thread 0xb54edb70 (LWP 8185)]
[New Thread 0xb4cecb70 (LWP 8190)]
[ INFO] [1300188179.676667659]: Loading general config from [/home/user/.rviz/config]
[ INFO] [1300188179.680106687]: Loading display config from [/home/user/.rviz/display_config]

Program received signal SIGSEGV, Segmentation fault.
0x02a7aad8 in ?? () from /usr/lib/nvidia-current/libGL.so.1