I am having an issue with the monitor flashing banded gradients and then having to manually shut down when I use any Adobe CS5 program or Pro Tools or Final Cut, I am currently using OS 10.6.4. The card is the NVIDIA GeForce 120GT. I have been having this problem since 10.6, Everytime i upgrade to 10.6.2/3/4 some problems are fixed and new ones arise ... I do not know if this is a 64bit problem or a problem with Nvidia. I would like to fix this asap as having the screen flicker and freeze while working has made my mac un-usable.