I guess He's trying to burn the house down...?

This unexplainable event happened today at 12:11pm on Wednesday, January 26, 2011. This morning my girlfriend & I woke up at 8am and we left to run some errands. We got back home at like 11:45 am and we figured we'd lie down to cuddle together before she had to leave. So we had about 15 minutes of quality time.
After our cuddle-fest was over and she decided it was time to go, I looked at the DVD digital clock to see the time was 12:10pm. We got out of bed and we gathered her things. We turned toward the kitchen counter where all the appliances are located to walk out of the apartment and we saw a small orange light on the front of the stove. The light indicated that one of the burners was "On". We stopped dead in our tracks because we both knew that we had nothing to do with it. It had not even been on that long because the electric coil burner wasn't even red yet. Not only does this scare the shit out of me because the burner knob isn't something you can walk by and accidentally turn on by, say for example a book bag hitting the knob to turn it on, you must physically push in the knob and turn to your desired setting, when I looked at the setting it was set on "5", the max being 6.
As I've explained a long time ago, probably back in 2009, the upstairs stove is gas/propane. When my Brother and Mother came home one day from being out, they walked inside the house and immediately were overwhelmed with an intensely strong odor of gas. They walked over to the gas stove and all 4 burners were turned on maximum, nobody knows who did it, nobody knows for how long it was just blasting out gas but it was enough to level a city block, IF Ignited. My Mom usually is smoking a cigarette when she gets out of the car and Thank GOD, on that day she was not smoking...that surely would have been enough to set the explosion but it didn't.