Originally Posted by
thump55
I think you need to re-think your foot position when unclipping. If you are unclipping one foot only (stoplight), I would think that foot should be at the bottom of the stroke.
The foot that remains clipped in needs to be at the top of the stroke when you start moving again, which it would already be if you unclip the lower foot.
Although I agree with the second part of this, I too have my weighted foot at 6 when coming to a stop. Anywhere else and your foot will fall to 6 when you unclip one foot and get off the saddle. If you're coming to a stop, 1/2 second to reposition that foot to the top of the stroke while your other foot is firmly on the ground is no problem.
To the OP, I second checking the cleats. Speedplays were the easiest pedals to get out of that I've ever tried.