kdelibs-3.5.1.ebuild contains SRC_URI="mirror://kde/stable/3.5/src/${P}.tar.bz2" where it should be SRC_URI="mirror://kde/stable/3.5.1/src/${P}.tar.bz2" the arts-3.5.1.ebuild has the same problem, and MY_PV should be set to 1.5.1
corrected :)