pr2_gazebo crashes on launch on Macbook7,1 Oneiric [closed]

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pr2_gazebo exits just after launch with the following error

[ WARN] [1330325613.680128000, 0.119000000]: You've passed in true for auto_start for the C++ action server at [/head_traj_controller/joint_trajectory_action]. You should always pass in false to avoid race conditions.
[ WARN] [1330325613.696923720, 0.119000000]: You've passed in true for auto_start for the C++ action server at [/head_traj_controller/follow_joint_trajectory]. You should always pass in false to avoid race conditions.
[gazebo-1] process has died [pid 31651, exit code -11].
log files: /home/shreeshga/.ros/log/7f375010-610e-11e1-b5fb-9027e4f37826/gazebo-1*.log
Traceback (most recent call last):
  File "/opt/ros/electric/stacks/pr2_mechanism/pr2_controller_manager/scripts/spawner", line 159, in <module>
    if __name__ == '__main__': main()
  File "/opt/ros/electric/stacks/pr2_mechanism/pr2_controller_manager/scripts/spawner", line 137, in main
    resp = load_controller(name)
  File "/opt/ros/electric/stacks/ros_comm/clients/rospy/src/rospy/impl/tcpros_service.py", line 430, in __call__
    return self.call(*args, **kwds)
  File "/opt/ros/electric/stacks/ros_comm/clients/rospy/src/rospy/impl/tcpros_service.py", line 519, in call
    raise ServiceException("transport error completing service call: %s"%(str(e)))

with an empty log file for

log files: /home/shreeshga/.ros/log/7f375010-610e-11e1-b5fb-9027e4f37826/gazebo-1*.log

I gather from other thread that its the problem with the graphics driver. But inspite of installing the nVidia driver from source, the problem persists.

My Graphics card Info:

*-display - GeForce-320M
                description: VGA compatible controller
                product: nVidia Corporation
                vendor: nVidia Corporation
                physical id: 0
                bus info: pci@0000:02:00.0
                version: a2
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi vga_controller bus_master cap_list rom
                configuration: driver=nvidia latency=0

Anybody has faced a similar issue?