Here is an example pdf (an svg from openclipart.org exported as pdf with inkscape). Notice that, when opening in evince under edgy, the borders are awfully aliased.
** Attachment added: "example pdf" http://librarian.launchpad.net/4892395/biodegradable_joel_mont_r.pdf -- no anti-aliasing for vector graphics in PDF using evince in edgy https://launchpad.net/bugs/67018 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs