wow, thank you for such a complete reply (if this is the summary version, I can only imagine what is the your full post on this.
anyway it is clear that you tested this extensively and your experience is of great help to me.
I do not have a mac (only Pc and linux) so no problem with sync here.
but I do have an E53, so I will give it a try following your instructions.
thank you very much, your input is highly appreciated!