Thanks for the advice :) - SR1 is on and made things a little more stable with regards to random crashes but did not solve the issue

Problem 1: Jerky Movements in the Pose Room

I also thought it could be a RAM issue so I slapped 8 gig in it and it had absolutely no effect at all.  However that was windows 7 32 so it could only use 3.5 gb of it anway - so I'm going to format the drive again, clean install windows 7 64 so it can use the full 8GB and see if that makes any difference.

Problem 2: Slow loading libraries

Another issue that has been driving me up the wall that may be linked to whatever it causing the above issue is that the library takes ages to load, shows lots of '??' by the directory icons until its counted how many items in that directory.  While its a pretty big runtime library (around 32gb) P7 never had any issues with this,

I guess I will see if Windows 7 64 solves the problem, then I will try a new graphics card, then I am giving up and going back to P7 and Vista (they may both be flawed but at least they seem to be stable)