Hm, so this is not a normal seasonal thing for you I assume. Maybe check your downspouts, etc. - we've had steady snow and melt lately, maybe you have water dripping off the house right next to the foundation? Any problems with your hot water heater or furnace that would result in a lot of condensate going somewhere? You did winterize your sprinkler system, right? So no system that you have a pipe leaking somewhere...?