upgrade or clean installation?

[Lutzer]

What happens if in Ubuntu current+1 an application X is additionally
installed by default or if application Y is not anymore installed by
default but Z instead? What about configurations/data like, for example
the background desktop image? Does an upgrade take care about such changes?

Avraham Hanadari schrieb:
> Dapper Drake will soon be making its appearance. I know there are ways
> to upgrade the OS, but I just installed the Kubuntu desk top on Ubuntu,
> and I think I prefer it. In addition to that, I've been doing a lot of
> learning and experimentation. I'm concerned about accumulated junk
> causing operational problems. In short, would it be better to make a
> clean installation when the time comes?
> 
> Thanks in advance,
> 
> Avraham
> 
>