[jdmccright]

I'd first check the thermostat and the cooling fan temperature switch. If the upper radiator hose stays cold after the engine gets hot, the thermostat is stuck shut. The fan operation is also dependent on the coolant temperature. If there's no flow, the coolant temp in the radiator never rises to turn on the fans.

It's possible that the coolant leak is simply that...a loose rad hose clamp or leaking thermostat housing gasket. Look closely where the coolant's coming from...you should be able to see where the coolant has leaked down and dried if it is coming from the upper portion of the engine. Water pump failure is rare for Camrys, so I 'd check the above first before tearing the front off the engine to replace the water pump. Good luck!