I can reproduce this on one system using an NVIDIA card and nvidia-glx drivers, one system using an NVIDIA card and nvidia-glx-new drivers, and one laptop (Acer Travelmate 4000) with an ATI card and no proprietary drivers.
I can reproduce this on one system using an NVIDIA card and nvidia-glx drivers, one system using an NVIDIA card and nvidia-glx-new drivers, and one laptop (Acer Travelmate 4000) with an ATI card and no proprietary drivers.