should be SRC_URI="ftp://ftp.kde.org/pub/kde/unstable/kde-3.1-alpha1/src/${P}.tar.bz2" instead of SRC_URI="ftp://ftp.kde.org/pub/kde/unstable/3.1-alpha1/src/${P}.tar.bz2"
Created attachment 2221 [details] corrected ebuild file
Corrected long ago.