System Crash caused by Nvidia Driver

Hi.
I recently bought Multiwinia ( http://www.apple.com/downloads/macosx/games/role_strategy/multiwinia.html), a featured download for OSX.
The game starts fine, but the moment I click on anything, the application freezes. There is no possibility to quit. The moment I press ALT-CMD-ESC, the whole system freezes. I wrote the error syslog to Ambrosia Software, but they insist it is a firmware or OSX error.

Screenshot:
http://img206.imageshack.us/my.php?image=img3937.jpg


This is the error message from syslog (which repeats over an over again):

18.05.09 11:00:35 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0xd GR: SW Notify Error
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:39 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:39 kernel 0000000b
18.05.09 11:00:40 kernel 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:40 kernel 0000000b
18.05.09 11:00:40 kernel NVDAOpenGL: Channel exception! status 0xffff info32 0x3 Fifo: Unknown Method Error
18.05.09 11:00:40 kernel 0000000b