When the kde-i18n-xx package is not found on ibiblio server, emerge try
to get it from ftp.kde.org/pub/kde/stable/<version>/src/ but that package
is in /pub/kde/stable/<version>/src/kde-i8n/ !! so emerge ends with 404 error..
I'm talking about kde-i18n-cs-3.0.3.tar.bz2 package...
Possibly change of directory structure on ftp.kde.org or some new error
in eclass kde-i18n file...
I think this had been fixed.
do the following:
rm -rf /var/cache/edb/dep/*
RIGHT !!! problem solved. The bug can be closed as fixed...