We have a LG LDFN4542B - after about 8 months, the control panel went nuts and we had moisture developing on the underside of the counter. Under warranty, a service tech replaced the entire control panel assy, latch, and duct. 6 months later, we have the problem again. I'm convinced the problem is that steam vents into the inside of the door, either out of the impeller motor itself or the hole in the side of the vent tube. Eventually this steam will damage the control panel, period. I covered up the vent hole and thought it had fixed it... apparently not. This is the closest discussion to what my symptoms are, so thank you all.