It's not fixed in any software update. It can't be without some type of control to toggle the coherency. If it's set the "other" way, then many more panels will (potentially) have a problem.

For those that have this problem... Look in Display Properties and see if there are refresh rates offered for your display. DVI panels don't normally show refresh rate, but check anyway. If you do, see if you can specify 60Hz (in case it's using 75Hz). Alternately, someone (I think Tom) mentioned a tool in this or the other Apple thread that allows you to alter display mode list. Another program to create custom modes is SwitchRes. See if your display(s) will support the desired resolution at 60Hz. Most panels are 60Hz, but a number support 60 and 75 annd the OS might be making only the higher mode.

Anyway, this isn't a guarantee, but a sugggestion in case it's not the coherency issue (alone) causing the problem. Just hope no one at work gives me sh*t for providing this much info.

Bruno