cool, thank you, artur-pt!
ATI Saphire HD 5450 1GB DDR3 (1002 68e1, subsys 174b 3000) QE/CI loss in ML solved: 68e1 is still present in ML ATI5000Controller.kext, but missing in AMDRadeonAccelerator.kext. Opened AMDRadeonAccelerator.kext/Content/Info.plist, found 0x68e01002 and extended into 0x68e01002 0x68e11002, saved, rebooted, BOOOOM - translucent menu bar is back, DVD Player works.
HAPPY