ray;
I post this so much, I'm even bored with myself. The high pressure hose for the P/S is merely the symptom. The root cause of the problem is the P/S Rack solenoid screen/filter. It is clogged and it is causing the P/S loop pressure to go up to the point where leaks occur. You need to get the screen/filter cleaned. If you don't take care of it soon, your new hose and your P/S pump will leak (again). The leaking fluid gets into the alternator (directly below it) and ruins the alternator, which in turn, ruins the battery.
If your shop didn't know about it, they probably aren't conversant enough to work on your car long term. It's a bit of an obscure problem in general, but very common on LS's.
According to them the pump/screen was fine and it was the hose that had a hole in it and was leaking. Either way, I'll keep an eye on it and see what happens.