This is a second refrigerator in the basement, and I'm hoping you are going to tell me this is probably a case of someone leaving the door open and getting some frost buildup. The chances of someone leaving a door ajar are.... high.
Top half warm, bottom half normal (ish). The frost pattern in the freezer side matches, too. It's thick (2" frost about 2/3 of the way up. Then nothing. (Can't find a way to post a picture!) We've cleaned out the bulk of the ice, and are letting it defrost completlely.
Meanwhile, what do you think? Does this sound like a frost buildup blocked airflow? Or does it look more serious?
Dunno what's going on with the uploading of pictures. I've done it in the past, but just can't find a way now. ???