new oil leak! Replaced pan gasket

thanks to the help from this forum! I can now see oil pooling on the driver's side of the engine block, just below the starter and above the oil pan. I have new valve cover gasket installed. The oil filter cannister and related mounting is dry. Can't see the oil pressure switch, so I bought one and will replace it anyway. What else could it be. This is not a very slow leak, leaks probably 10 drops overnight on the floor. Thanks for any help you can think of. Keith

Keith, last year I replaced the valve cover gasket after doing the valve clearances. Torqued to specified value, two days later I had a leak and I started looking at everything apart fro the new valve cover gasket. And you know what? It ended up being the valve cover gasket that tore under the specified torque so do not dismiss the new gasket!