Today I discovered that the fridge is leaking water. I pulled it out, turned the water off then cleaned everything up. It's amazing how much dust collects under these things. I took the back off the fridge and cleaned out everything I could get to. One of the water pipes was cracked about 3" from where it goes in to the valve, and luckily what was left was long enough to plug back in. It looks like I'll end up having to tear the whole thing apart to replace the hose next time this happens, but for now we're good.