It might be your gasket between the timing cover and the block. When you change the pump if you don't keep the timing cover tight since the WP bolts are part of what holds it tight you can cause the gasket to start leaking.
A common place is right behind the large coolant hose (from the radiator ) coming off the water pump. The gasket between the block and timing cover gets very narrow there and can be a place it leaks. It's hard to spot but you will often find the back side of the large coolant hose wet because the coolant will leak out and run down the coolant hose then drip off on the AC and other area.
[This message has been edited by Dodgerunner (edited 02-23-2014).]