I had a belkin one that went up in smoke luckily I was there to unplug it at that moment or I don't know what would have happened. Upon closer inspection,I took it apart to see what failed and it looks like the little neon bulb in the power switch shorted out or something It was flickering for a while I just thought it would go out and not short out.

Theres always enough room in the junction box.You just need a bigger hammer