Great news, this (OpenGL) is fixed!!!!
Asus GTS 450 1GB
And most importantly new NVIDIA-drivers:
QUADRO & GEFORCE MAC OS X DRIVER RELEASE 304.00.05f02
Tested: changing resolutions; no more blue screens (or actually a blue screen, but then it recovers)
Tested: coming out of 3D game; back normally to desktop
Not tested: display sleep (i've it turned off)
Worked for me! MB: Asus P8B75-V, NVidia GTS450 1Gb id: 0dc4, OS X 10.8.2 : change resolution - worked!, iShowU Pro - worked! turn off/on monitors -worked! boot fastest! (all of this optinion not worked before)