My question: About a week after I purchased the home, I noticed that there is a considerable amout of moisture behind the poly in several areas of the basement. The majority of this moisture is in the 6 inches of insulation sitting parallel to the floor, on top of the block between the exterior wall and the wall framed inside of the block. In some locations, it appears that the moisture has migrated down the wall, into the insulation in the interior 2x4 wall. I am assuming that the block wall is "cold" and that there is condensation forming and soaking into the insulation. Is condensation enough to completely saturate the insulation, or does this sound more like water soaking through the block from the outside? Is this common in an unfinished basement with no heat/air conditioning, or is this something that I should call my builder about right away? Are there any things that I should look for to see if the builder skipped or missed something to lead to this?