To gain ISDN functionalities, I would like to upgrade from i-382 1.5
to 1.5.1.

Is this upgrade requiring internal structure changes in /etc/* files
or did any configuration files change location?

I did an upgrade once (can't remember which version [#1.3]), and I
messed up my entire configuration on this system since many
configuration files changed location and the internal structure of
those files was changed.

How about my planned 1.5 -> 1.5.1 (or possibly in a few weeks 1.5.2)
upgrade from 1.5?

TIA

-- 
Cu  Georges Heinesch, Luxembourg
    geohei@geohei.lu
    http://www.geohei.lu
    PGP RSA & DH/DSS public key on request and on public servers

... because water just isn't wet enough !