With regard to my previous post, I have recently upgraded to 9.04. I was finally getting too fed up with sound and display issues on 8.04 so upgraded to 8.10 (Intrepid), but found no improvements with the NVidia integration and sound on Skype. I took the plunge and went for the 9.04 release candidate. I have to say it is a massive improvement for me with instant out of the box dual monitor support and the sound stuff all works without having to install pulseaudio.
I need Windows less and less now and I feel the writing really is on the wall for Microsoft. This seems to be confirmed by the increasing amount of laptops for sale with Linux rather than Windows.