XmlClean wasn't treating <address> as verbatim content and was inserting newlines after <street>, <country>, <phone>, and <fax>. Whitespace is honoured in <address> anyway[0] and somehow the end result was a leading non-breaking space on every line of the address after the first. Fixed in commit 1704 [0] http://www.docbook.org/tdg/en/html/address.html
Back ported to branches/publican-2x Committed revision 1796.
I can verify that this fix is working as expected.
*** Bug 671291 has been marked as a duplicate of this bug. ***