lexa2 thanks for the advice.
I fear that Ubuntu 12.04 is going to have this driver as the default Nvidia (non-free) driver, this is going to cause a huge amount of bug reports for the distro.
If they launch with this driver they are going to get a tonne of bug reports and complaints of Ubuntu 12.04 not being stable.
I have opened a bug report here
(completely ignored so far)