Of at least the kdelibs-3.0.1, kdemultimedia-3.0.1, kdeedu-3.0.1 ebuilds the digests are wrong (probably the packages changed). With kdemultimedia manual digest fails as ebuild (2.9.13) tries to download kdemultimedia although it is clearly allready downloaded.
If you remove the digest first it appears to work
I'm on it, new digests will be committed as soon as I can fetch the sources (2-3 hours).
...And it'll be unmasked and announced as soon as the digests are there and I've routinely compiled every changed tarball just to be sure.
They're all ok now.