Thanks for your answer.
pan2view :
I did not use any "updatecall". You can have a look at the XML
here.
Just some basic "moveto" actions.
It's the first pano I wrote, so I had no idea how to manage the different movement.
Do you think some "tweening" would smooth the camera movement?
klaus.krpano :
I've added the argument you have suggested and it seems that the pano works better. Still not perfect.
Thanks again for your help. Very much appreciated.