my 1st pair broke in exactly the same place too. Luckily I didn't break my leg though, that sucks! I haven't had any problems with my 2nd pair though, and they were also from last season.
I support Line more than any other company, no one has come close to putting as much into "newschool skiing" as Jay Lev and the Line team, but I have to say that I'm pretty dismayed/surprised that Line hasn't ever (as far as I'm aware) said anything official about the problems with the bindings. Clearly there were problems and it seems only fair that the people that bought the bindings should be aware of what they were and what caused them and what has been done to resolve them, even if it was only a problem that only affected one batch of bindings (which I have always suspected was the case).
Having said that, I love the concept and will continue riding my reactors as long as I can...