I've been doing a bit of rummaging in /usr/portage/local/layman and found 2 xml files.
One is cache_effa47c90e557a6999447a42deb0520f.xml which has this inside:http://sabayon.org/
Purpose To provide ebuilds that were created from the Sabayon Linux project such as customized programs, ebuilds not in the official portage, artwork, themes, etc.
The other is cache_65bd38402ac8431067b54904bd2ed2d1.xml which contains all this: http://roslin.kicks-ass.net/
This is roslin, my small overlay. Enjoy! (: http://s3d.berlios.de/
Gentoo ebuilds for s3d and related packages. s3d is a 3d network display server which can be used as 3d desktop enviroment. Experimental overlay for desktop effects packages. Packages for players and authors of interactive fiction Gentoo ebuild overlay with misc stuff that I find interesting. http://pgfg.tuxfamily.org
Overlay Perfect Gnome for Gentoo Experimental overlay for zen related packages. Miscellaneous ebuilds not yet in portage Linux Terminal Server Project overlay http://www.thepetersclan.net
This is a FFMPEG svn and snapshot overlay.
large amounts snipped http://www.mavrinac.com/index.cgi?page=tp
Overlay for the Thousand Parsec framework for turn-based space empire building games. Kernel Virtual Machine userspace support http://ebuild.gentoo.gr.jp/
GentooJP provides custom ebuilds for Japanese Gentoo users. https://trac.poildetroll.net/trac/akoya
Akoya overlay http://gentoo-wiki.com/Howto_OSS4
OSSv4 overlay http://overlays.gentoo.org/proj/ruby/wiki
Experimental ebuilds from the Ruby edge. http://dev.gentoo.org/~mueli
Overlay which provides the bleeding edge on the kerberos integration in gentoo. http://git.overlays.gentoo.org/gitweb/? ... ;a=summary
Ikelos's hospice for broken and damaged ebuilds. http://www.wolf31o2.org
Wolf31o2's project ebuilds http://www.gentoo.org/proj/en/desktop/lxde/
Repo for development of ebuilds for the LXDE desktop environment. http://os-rostov.ru/
So I've found the culprit but what is it, where did it come from and what do I do with it? Do I need it? I tried renaming it but running layman -S rebuilt it.