dpkg -l | grep nvidia
ii  nvidia-cg-toolkit                        3.0.0016-0ubuntu1~natty1                              Cg Toolkit - GPU Shader Authoring Language
ii  nvidia-common                            1:0.2.35                                              Find obsolete NVIDIA drivers
ii  nvidia-current                           290.10-0ubuntu1~oneiric~xup1                          NVIDIA binary Xorg driver, kernel module and VDPAU library
ii  nvidia-settings                          290.10-0ubuntu1~oneiric~xup1                          Tool of configuring the NVIDIA graphics driver