the ebuild for arts 1.1 (KDE 3.1) does not work properly: it tries to download a file named arts-1.1_rc7.tar.bz2, while te correct name is arts-1.1.tar.bz2
two things: -arts-1.1_rc7.tar.bz2 is ok -i renamed it to arts-1.1_kde-3.1.tar.bz2 (cause there were other users in #gentoo confused) kde released a arts-1.1.tar.bz2 since kde-3.1_rc4, so we had to rename it. thanks.