http://wordpress.org/development/2007/01/wordpress-207/

坚持用2.1……

Security fix for wp_unregister_GLOBALS() to work around the zend_hash_del_key_or_index bug in PHP 4 versions less than 4.4.3 and PHP 5 versions less than 5.1.4 with register_globals set to “On.”
Feeds now properly serve 304 Not Modified headers instead of mismatched 200/304 headers (a.k.a. the FeedBurner bug).
Backport of another 304 Not Modified fix from WordPress 2.1
Deleting WordPress Pages no longer gives an “Are You Sure?” prompt.
After deleting a WordPress Page, you are now properly redirected to the Edit Pages screen.
Sending an image at original size in Internet Explorer no longer adds an incorrect “height” attribute.

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wordpress, 升级

引用地址：http://www.underone.com/2007/01/16/wordpress-207/