Strange that they apparently had no LI ion battery problems with all the test flights and now they are happening. This does not sound like a simple thing to fix.

edit: from Aeronews: common story.
"Aviation reporter and blogger Ben Sandilands writes in Plane Talking that while employed at Securaplane, which brought together mission critical battery assemblies for the 787, Leon wrote a report on the battery technology planned for the 787 saying it was a flight of safety risk and that substitute battery technology should be used. A month later, Securaplane's main buildings were burned to the ground when a battery test went wrong. Leon was injured in the blaze. Securaplane reportedly tried to force Leon out of the company when he refused to ship what he considered an unsafe battery assembly to Boeing for use in the 787. That assembly later malfunctioned when installed in a prototype airframe."

Yawn....after a very quick inspection of the aft battery, all 6 of our 787's were back in service.