#470998 by cwgordon7, bleen18, Psicomante: Fix top padding for logo in Garland, so the logo is placed at the right position with the background

#215080 by robertDouglass, jaydub, drifter, Dave Reid, andypost: added index on system table's name and type column to improve bootstrap performance

#530950 by catch, andypost: use \!isset() instead of is_null() in user_access() to be consistent and more performant

#332890 by Alan D., sharda_ram, andypost: slightly better documentation for base_url in settings.php

#336627 by EliseVanLooij, Tresler, jhodgdon: node_type_form_validate() was documented to implement hook_form_validate() but is just a function called back due to how it is named after the form ID, no such hook exists

#537276 by tic2000, alex.k: feed titles in blog_feed_user() and blog_feed_last() were concatenated English strings, lacked translatability

#371458 by Gerhard Killesreiter, David Strauss, Damien Tournoud, smk-ka, catch, febbraro: add index on tab_root, weight and title in menu_router to improve performance of retrieving tabs

#318453 by svdoord and ahmed.othman, slightly modified: ensure that the user registration guidelines show above form fields added by the profile module by setting a low enough weight

#346450 by snoble, Damien Tournoud, Dave Reid, Josh Waihi, neilnz: the 'length' Schema API property was documented to be only applicable to string types but was applied to others nonetheless; should only apply to char, varchar and text

#334826 by maartenvg, Dave Reid, brianV: when editing an anonymous comment, the uid was set to NULL, which is not valid as a database value for the uid; set to zero

#315047 by Island Usurper, Crell, brianV, Josh Waihi: names of database columns were not escaped when changed; caused problems with using reserved words

#232321 by munzirtaha, brianV: There is no body field in the node table, so fix misleading example in database.inc to query for node.nid instead

#395132 by jhodgdon: Fix phpdoc comment on poll_node_form_submit(); there is no hook_submit() in Drupal 6 and this gets called based on the form's key

#302240 by fago: forms were rebuilt on validation errors and when #ahah was used #cache was turned on, but form storage was not actually stored

#107824 follow up by myself: ensure that the newly added updates are in the 6.x-extra group and not disguised as 5.x to 6.x updates

#480044 by JohnAlbin: fix system component listing lookup priorities, so the sites/all/* items will override the profile shipped items as documented

#107824 by Frando, heyrocker, Dave Reid, AlexisWilke, andypost: the dblog referer and the statistics url columns were not in line with how we store URLs elsewhere (like the dblog location column); could result in data loss due to length truncation

#295895 by Michelle, JohnAlbin: Garland mistakenly used phptemplate_comment_wrapper() to override comment-wrapper.tpl.php; should use a preprocess function instead to complement the core comment-wrapper.tpl.php

#276615 by JacobSingh, Robin Monks, mikeytown2: drupal_clear_css_cache() should not be called on all invocations to the themes admin page; should be called only on submit - consistent with the modules admin page

#454462 by JohnAlbin: MODULE_preprocess_maintenance_page() functions were never called, even if the database is online

#359276 by lyricnz, Heine, Frando: Fix named entity handling in filter_xss(), so it does not clash with other entities and result in wrong encoding

#280240 by skiminki, casperbiering, anypost, pwolanin: Only add Content-Length if we actually have any content or if it is a POST or PUT request.

#506096 by axjo: node.tpl.php mistakenly mentions theme_user(); should reference theme_username() instead

#409994 by Wesley Tanaka, jhodgdon: better documentation on how the cid and wildcard arguments interact on cache_clear_all()

#265265 by neochief, jhodgdon: missing phpdoc @code tags on PHP code examples in form.inc and actions.inc

#499254 by chx: Drupal lacked support for positive integer values in database queries, beyond PHP_INT_MAX; caused issues with twitter integration and big numbers in general

#310139 by fonant, c960657, pwolanin: drupal_urlencode() and Drupal.encodeURIComponent was used to encode query strings and other components it should not have been used for

#284392 by Passionate_Lass, Anselm Heaton, tassoman, agentrickard: DISTINCT handling in db_distinct_field()'s MySQL implementations was resulting in bogus queries

#482646 follow up by Dave Reid: only check the db prefix for simpletest if it was a string (not running a multisite)

#352121 by valthebald, Damien Tournoud, mr.baileys: The safe string check on translations should only be applied to the default textgroup. Strings in other textgroups such as blocks and menu items are displayed via escaping and filtering, and might contain arbitrary HTML.

#329797 by berenddeboer, redndahead, danielb: The tablesort code did not account for possibly nested tables; only match immediate descendats, so elements of nested tables are not matched.

#455172 by budda, RoboPhred, andypost: Fix drupal_mail() documentation, so that it encourages to set the body of the email as an array (like core does).

#461938 by grendzy, JamesAn: Use filter_xss_admin() on site name and site slogan, just like footer message and mission