Hey guys TripNRaVeR posted this thread recently and you may want to keep track of it. Its a stock Arc Rom and it seems to have everything working. I am guessing that it will be stable and most applications and drivers will work on it. Since the genius's at SE made the Arc 1gz the X10 should be able to use this Rom as well. Well once its get released I am flashing it = P.
The Rom still has not been uploaded, but will soon be.