Also on ATI it helps to disable the QE/CI kexts.
In my case it was:
AMDRadeonAccelerator.kext AMDRadeonVADriver.bundle AMDRadeonX3000GLDriver.bundle
So if someone could check this files for traps and other problems it would be great.
this is great. i can confirm that, by removing this three kext, all my graphics glitches are gone.