Coolant Leak?

I just purchased a 2000 Silhouette. There is coolant leaking from the front left corner. It appears to be coming out near the bottom left corner of the radiator. Has anyone else had this problem? It almost looks like there is a drain valve or connection but I can't get a good look without pulling things apart. Before I pull it apart to just wanted to know if anyone had any info. Thanks.

Drain plug for radiator is in bottom left corner. It may have come loose. It simply pushes in and out. It doesn't screw in.

actually , I believe it requires a 1/4 turn or so, then pulls out

A lot of these newer style plastic drain plugs have an O-ring too, which could be bad.