I'm unfortunately joining the ranks of those who are experiencing blue liquid leaks from this unit. I found a ring of blue liquid on the surface of the shelf where I had stored it (a portion of the area is permanently stained now) from around the seam ring on the bottom of the unit, and on one of the protruding parts on the upper side, as well. There are no cracks visible. This is a frustrating development for sure. Of course, my unit is several years out of the warranty period, but, frankly, I expected it to last many more years, especially as I have been careful to treat it per instructions in the manual, and also because it is a product from a company known for durability and quality. It has produced many batches of ice cream, which my family looks forward to on special occasions. It is difficult to arrive at a rating when the unit becomes unexpectedly defective with what now appears to be a common problem. Otherwise, it made pretty good ice cream, although at times it seemed to be slow to freeze the mixture.