Comment # 21 on bug 1001554 from Wolfgang Bauer

(In reply to Dominique Leuenberger from comment #20)
> Or the issue only happens with the DVD - installing from the live image
> means also using the NET installer - as Ronan said, then the problem does
> not appear; only when installing from the DVD

Right, I just wanted to mention it. (And I forgot about the fact that the
LiveCD is using the NET installer nowadays... Sorry for that.)

May be related to the order in which the packages are installed too I suppose,
might explain a difference between a KDE and a GNOME install.
But probably not between a GNOME install using the DVD or the NET ISO...

What may be a difference though is that the NET installer downloads the current
versions from the online repos, while the DVD is fixed.
So maybe it would be a good idea to retry with the latest DVD?