Yep, I agree with you JnJ. The basic air temperature, humidity relationships make all of our freezers/refrigerators either make frost or condense water. My kegerator is out in my shed and it condenses a lot of water out of the air so much so that I need two small buckets of DampRid. The warmer the air the more water vapor the air can hold and at certain cooler temperature points or the dew point the water vapor will begin to condense out of the air and liquid water will result; on our yard in the morning it's dew and in our kegerators it is liquid water unless there is Damprid around. About the only way I know to help other than Damprid is to have a good seal and open the door as seldom as possible. I bet in Ol' San Anton you have it rough like us in Austin with the high humidity but we're not as bad as Houston. I bet those guys need gallon size containers of Damprid or Dryerite.
Off Topic, did you ever convert those two kegs I gave you? The one I kept has been working pretty well as a fermenter but someday I'll get a conical I hope; maybe if I get a bonus this year at work.