It appears that none of the section ID attributes were set for the Fedora 11 release notes, so URLs are ugly ... http://docs.fedoraproject.org/release-notes/f11preview/en-US/index.html#id2781534 ... instead of pretty and welcoming ... http://docs.fedoraproject.org/release-notes/f10/en_US/index.html#Welcome_to_Fedora_10 In addition, it is possible that the generated ID attributes are different every time the release notes are built from DocBook source. This means that when the release notes are updated with bug fixes, it may break every single URL link inward. That is not good. (Not sure if this behavior is still the same in the DocBook toolchain.) As a person who has done the manual ID attribute creation since forever, I know what a PITA it is. There are ways to work this out with improvements to the toolchain (either how the DocbBook comes from the wiki or how Publican handles it by auto-generating ID attributes from the contents of the <title> block). In the meanwhile, I can only see manual ID attributes as the way to go.
Fixed in version 1.5 with Publican's "make clean_ids"