#197186 by dww, testing by catch, webernet, greggles: (critical security functionality) update.module did not inform users when their current release became revoked/not supported

#207779 report by meba, patch by myself: missing plural formatting in forum module, and a counter display fix as well

#194590 by scor, JirkaRybka, attiks, dvessel; with heavy testing by catch: fix a dozen issues with sticky table headers

#153998 by David_Rothstein and myself: clean up permissions in book, blog, blogapi, forum and locale modules

#151910 by chx: support subqueries in db_rewrite_sql() - now that we use subqueries even in core, this was critical

#195091 by Rowanw: (usability) swap enabled and expanded checkbox in menu admin and allow setting elements without children to be expanded

#164532 follow up by pwolanin, David Strauss, catch and myself, testing also by hswong3i: some indexes added before Drupal 6 RC1 were too unique, and our code did not back them, so we should not add those indexes

#204946 by theborg, keith.smith: only tell users their language setting will be used for interface presentation, when this actually happens

#199946 by JirkaRybka: append a short query string to CSS and JS files, changing on upgrades, so on core/module/theme upgrades, browser caches will 'flush'

#207170 by hswong3i slightly modified: drupal_write_record() did not return FALSE on query failure and had bad documentation on the returned values

#200777 by JirkaRybka: theme settings form relied on _POST[] and stored irrelevant formapi keys as theme settings

#202821 by marco.robotangel: display messages above help in all core themes for consistent user feedback (usability)

#206670 by keith.smith and myself: node type names have their underscores converted to hyphens in node/add links

#206820 by catch, keith.smith: forum delete confirm form was saying it deleted posts, but it does not