Weird. I checked in on my cube today and found the fuse all melted, still worked though. Then this thread shows up in my "Show new replies to your posts."
Here is pic of the fuse, sorry about it being blurry, my phone takes crap pics while zoomed:

I've had it plugged in since the beginning of February. It's the only one I have running in a room and it has decent ventilation. Not 100% sure how long it's been like that, I check on it regularly though. It did get a little warm last week for a few days it was around 26-29 degrees Celsius (79-84F), could that have caused it?
I replaced the fuse and have been checking on it every hour or so and all seems to be fine. What could have caused it? Should I be concerned with the health of the miner?