Nokia Lumia :: Touch Input Stops Working

I was taking a shower; the Lumia 900 on the bathroom counter like I've always had my iPhone 3G. I got a call, dried off, used it, and the buttons on the phone became frozen and all touch input was no longer working. I finally soft reset the device by holding down the power button for 15 seconds (ignore the pull down to shut down tile, you can't drag it) and reset and it works again, but I am concerned. A little bit of humidity seems to have knocked it out, but it may be a coincidence.