Rich, my contractor son said something similar to Marc. He said to use a good Brad nailer and finishing nails. However he said they glue it first, as the nailer sometimes does not hold it as good. Once the glue sets, its usually well secure.
He did mention that when they do steel studs, they plan in advance for trim work by installing some type of wood backing to the studs, before gyp- rocking.
But as I always tell him on my projects. "now you tell me that".
