Re: postinst corrupts my settings after a 'apt-get upgrade'.
> Another szenario might be that i have installed service xyz but i have disabled
> it because i did not want to use it right now. If it is updated via a package
> update the default postinst behaviour is to register the init script in the
> runlevels and starts the daemon/app/whatever. This is not the behaviour i
> I'm thinking wrong here or is this a problem in dpkg/APT?
> In my eyes the postinst script should check whether it is installed the first
> time or not.
This has nothing to do with dpkg or APT. It has more to do with
Debian policy --- from the point of view of dpkg, each package
provides its own postinst script with whatever behavior it chooses.
There have been a few discussions of this recently.
Hope that helps,