The jury is still out on mine. I did have to turn the din up today because they were releasing ridiculous easy in the pow at Skibowl, the problem seems to have been solved. But I have new boots now and late last season I didn't have any issues with the deadbolts at all. It should be noted I only use them on my big mountain/powder skis and not in the park at all.
Do some of you have the version that has the upward releasing toe for landing switch or whatever? I'm thinking maybe that might cause some unusual releases.
ive had 412s for about 2 years and i love them. ive never had any problems prereleasing or anything like that. never had anything break on them or anything. i would highly recommend the deadbolts