Hello. I entered my home to find that a light was on. I definitely did not leave the light on when I left. When I looked at the switch, it was burnt and there was smoke residue everywhere on the mirrors and a burnt smell in the room. I went to turn it on and there was a hot heat coming from the switch area. I tried to turn it off but the light would not turn off. The only way to turn off the light was by delicately balancing the switch inbetween the on/off position. I am trying to figure out why this occured. I had a mouse in the house last year and I am wondering if a mouse could have done this, or if this was somekind of odd mechanical failure of some sort. The Fuse to the room been turned off and the switch has been disabled. No heat is coming from it anymore.