It's system wide across accounts, and on both eMacs (networked). I think I used to be able to set the refresh rate separately, but now it seems to be locked in by setting resolution (only one refresh rate available per resolution).
Resetting the finder preferences didn't help, but thanks for the idea. However, using the geometry tab and resetting to factory defaults helped a little. This had the effect of creating a little slack in the brightness control under the display tab. Playing with the contrast control under...
I have the same problem on both of my emacs (Mini not impacted), and have tried everything: zapped the NVPRAM,tried open firmware reset,recalibrated most profiles, tried freeware Brightness Control panel. It's still way too dark, as if the contrast and brightness controls were reset way too low...