Now synthing my shoots on Cuba, I find something to add to the original problem report.
In The Netherlands and France, being east from Greenwich, the Photosynth misplacement on Bing Maps is to the east. In Cuba, being west from Greenwich, the misplacement is to the west.
Latitude and Longitude properties in the photos come either from the camera's GPS sensor or from Live Photo Gallery's geotagging feature.
Why is there no one from Livelabs responding to bugs reported here?