on my look p10s it was about once or twice. now that my home mountain broke them testing them to make sure they were safe for me to instruct on, im on my old axium 90s and i released almost 10 times today. i need to crank em up a little bit.
oh, my bindings passed the safety test, but ever since that test my heel piece only went halfway up and i had to lift it up. i brought it to my local ski shop and they did a forward torque test and it failed miserably