dev-python/pyxdg-0.5 ebuild currently says its using the GPL-2 license. According to the ChangeLog the license changed to LGPL in 0.5. The source-package still carries the GPL-2 though. Pre-Assigning it to Heinrich Wendel since he's mentioned as maintainer in metadata.xml.
you are completly right, it should be LGPL-2, which is also included in the source package :) btw. i'm not only the maintainer but also the author ;)