Wasn’t me. See if that also happens with the volumeRender SDK demo when you render larger volumes.
I got that error too, but I figured it was due to running the display on a nVidia Quadro 1300FX card and suspected an openGL interoperability bug. I think the leak occurs when the display card is different from the compute card (which the SDK samples choose to always be the highest GFlops CUDA card in the system).