Didier:
...
>     That said, concerning the usr merge, I consider it was a waste of
> time and is a burden for no profit. If all distros do it, it'll just be
> a bad moment to live until the transition is complete. AFAIU, I'll need
> to do it before I upgrade to Excalibur, or install Excalibur from scratch.

The usr-merge is particulary painful when you have remote system
(which can be wery remote) needing upgrading. Debian was once
the champ in that area. But I will never ever install something
debian-related on remote systems again.

Regards,
/Karl Hammar