Now, why don't we get posts like this on the Airbus threads?
The 787 is without doubt a fine aircraft, and, whichever way you look at it, having an aircraft - any aircraft - grounded because of a perceived defect in its BATTERIES, for goodness' sake, is just stupid (the fault, not the grounding).
However Boeing's and the FAA's statements on the matter don't exactly inspire confidence, no matter how correct they may be. The fact that the root cause has not been found can only be interpreted as "we know it will happen again". And putting the battery in a fireproof box, while it may be effective in preventing a hull loss, has all the signs of an engineering kludge which does not befit such a fine aircraft.
So while I'm sure that all the regulatory boxes have been ticked and that the aircraft is safe to fly, from the technical side the state of affairs cannot be described as being particularly satisfactory.