Thanks alot for that, Ive made a bit of progress
I removed the connectedmotior option, and changed the metamodes as you suggested:
Option "MetaModes" "1440x900,1280x1024"
With this change, the second screen now appears to be of the correct resolution as does the first and all distortion is gone
However there is now a problem, that if i maximize a window on the first screen, it goes behind the taskbar, i.e it dosnt respect the screen boundaries and i am unable to see the status bar of a maximized window without hiding the task bar. This was not a problem that I had before, when there was distortion on screen 2.
It looks like this with a screenshot, as you can see its not working correctly, the firefox window is maximized to screen 1, and also it appears to go down vertically to x1024 pixels i dont know if this is meant to happen...
Any ideas? I also tried changing the screen 1 modes, but this made no difference.
Thanks again for your help