Nightriderr, Did shops do your oil changes?
Someone should have seen that stuff pulling apart long before it came to the complete disconnect of subframe/bushings.
Salt belt eats though stuff and bushings/bolts etc, can rot if not washed frequently.
A salt concentrated neutralizer spray in winter may be a good idea after coming in from the outside gunk. http://www.rockauto.com/catalog/x,ca...parttype,10721
I know with my cars if it does have to go though salt, I try those touchless washes, or better those manual power wash bays where you can really get it clean underneath!