Me too! It was such amazing fun and we really believed we'd make it big time. We built "VR tours" to art cities in Italy. A few are still online: http://www.girareggio.it/ and http://www.comune.bologna.it/girabologna/ and sort of kinda working. We used a Seitz Roundshot 220VR camera to take all the photos. Probably the weirdest camera I have ever used, quite special. As you say, it soon became clear that Apple was not investing any effort in QTVR (or in QT in general tbh) and I remember struggling writing a QT C-extension for our PHP-based authoring env. Good times!