I've had this happen to me every time I'm on the eliptical. I always try to make sure my feed are right in the center of the pedals and that they are not cramed up to the front of my shoes.
I now use walking shoes when I work out. They help me as they are a bit tighter in certain spots and my foot won't slide around.
I agree that it's nothing really, take a break if it starts to get bad. Nothing worse than getting off one of those things when you can't feel your feet.
Hardest part of working out, is that first step out the door.
Long term goal- revised after baby
240 goal - 02/17/10
Had a baby- 06-01-12 gained 46 pounds.
234 lost baby weight 3-21-13
220 goal = half way!
218 goal = Lowest ever weight!