Could be one of four things..
1. The A/C is low on freon and iced up causing condensation to leak out of the cabnet when it melted.

2. Your condensation hose is holy or not attached anymore.

3. Your heater core is faulty and that is coolant on the floor.

4. It has been raining and that is rain water.
Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />

professional bovine relocation specialist