Quote Originally Posted by Deborajen
I started having a similar problem when I switched to clipless pedals a couple weeks ago. It goes away quickly when I get off the bike, so I assume it's from the pressure in the balls of my feet.
How stiff is the sole of your cycling shoe? If your shoes are not stiff, this could be caused by the pressure of the pedal through the shoe. My Sidi Dominators are very stiff, and I don't experience any numbness problems like you are describing.