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Note: WordPress 1.5 was replaced by Version 2.0.
On Sunday, August 14, 2005, WordPress version 1.5.2 was released to the public. Specific information on downloading and the new features of 1.5.2 can be found at WordPress Development 1.5.2. For information on the changes and improvements in this new version, see Changelog for 1.5.2.
Archive copies are available for download at http://wordpress.org/download/release-archive/
For step-by-step instructions on installing and upgrading WordPress:
If you are new to WordPress, we recommend that you begin with the following:
There were a number of changes from 18.104.22.168 to 1.5.2. Some of the key modifications dealt with XML-RPC, PHP's "register_globals" setting, pingback links, new plugin hooks and improved trackback/ping/enclosure detections to reduce the delay in saving posts.