The lines running horizontal and vertical are directly in line with the waste pipes, i wouldnt worry about those white lines they are not mold or mildew, just areas that have not gotten dirty inside the wall cavity. The waste pipe looks like there is crud formed on the joint, this may be your source of moisture. It could also be a leaky roof, tub surround, dishwasher, cracked slab, etc. It could be almost anything, look for the source of water and you've got your answer regarding the lower moldy areas. I found a leaky compression fitting to be the source of my problems. Z "Sammy bin Snoozin" <SammyBinSnoozin@REyahooMOVE.com> wrote in message news:wDSLi.28782$jC5.6003@trnddc04... I uploaded all the photos here also.... http://www.geocities.com/sammybinsnoozin/kitchen.html