Umm, they did respond, by patching it. They only patched the last 3 versions though, not great for something affecting every 5.x version. It was only made public a couple of days ago. Like you, they dont have time machines to see into the future. Of course, this topic bought the usual anti IB/VB trolls out, with their expecting trolling. The facts are simple, an exploit was made public, a patch was released (well within 2 days as far as I can tell).