I have been told (by an electronics engineer that I know) that, along with the 10K pull down resistor, you should have something in series with it. His explanation was that a MOSFET can occasionally 'run wild' and the gate essentially shorts to source and will draw amazing amounts of current.

His suggestion was 1K to 5K or so, try it, if it works, great. Since then, I've used a 2.2K and have never had any problems.

Just my 2 cents