http://www.physorg.com/news/2011-11-scientists-vacuum.html You need to read this in case you missed it. LENR might well be something else!
There’s been some discussion of the Casimir effect on Vortex-L, but I’ve been ignoring it. I’ll have to start paying attention. Those guys who argue from the zero point energy perspective usually strike me as kinda nuts and they don’t seem to further the discussion along. But this development might change that perspective.