Well so far so good, the Nvidia 163.69 drivers seem to have aided stability to some degree and also interestingly a few new options in nTune seem to have opened up.
Most noticeably a function to give priority to games to the network… interesting and clever! Although i cant say ive suffered any problems from the chipset or the connection itself when gaming. It has always mostly been down to me forgetting to allow it through the firewall! 
Its not improved Bioshock in much way though, it still randomly crashes out when doing certain things (vendors and picking up tonics/plasmids) although im convinced now this is a program issue with the game itself rather than the graphics drivers.
Can see myself finishing it before any improvement is made though!!
One thing i would like to see is a mod for Bioshock to let you play around with the Physics Engine like the Garrys Mod (GMod) lets you do with Counter Strike and Half Life 2.
