Hi, I have the same issue. It is not that bad at the moment, but I want to prevent it getting worse. My model is a RSG5DUMH. It is over 10 years old. I do not think the water supply is leaking. I reckon it is condensation due to insulation breakdown. There is also corrosion around the door handle mount. I do not think Samsung sold many of this model as I find it very difficult to find information on this machine on-line. Lots of variants out there!
