Might be a permissions issue. I was muttering to myself earlier that the Automod uninstall feature should really have a place where it lists the mod that it is uninstalling. As it currently doesn't. So if some admin were to think he was clicking "Share On" but accidentally hit "mChat", he wouldn't know he had uninstalled it until after it was uninstalled. And all of the previous settings would be lost.
Anyone else not seeing chat?