Weird huh? lol glad you got it sorted anyway. Can I ask why your using GPU3 rather than GPU2? I went for GPU3 because of Fermi support but Id rather not have the negative impact on my SMP (still learning here and we all know: knowledge = POWAAAAH! lol) Sweet but if people keep joining with decent kit, my ascent up the ranks will slow down Lol
Well done. To avoid more never-been-properly-fixed-difficulties, make sure you get graphics cards with the same generation GPU ~ nVidia's naming system is incredibly misleading, but if you get another GTX 200 series card (not a GTS) you should be OK.
Honestly I just wanted to see how the new client went and if it impacted my ppd, which it doesn't seem to have done at all, so I'm happy