Confluence 2.5.8 is a highly recommended upgrade that resolves some issues in the user management framework and a memory leak in Confluence 2.5.x.
You can download Confluence 2.5.8 from http://www.atlassian.com/software/confluence/ConfluenceDownloadCenter.jspa. This upgrade is free for all customers with active Confluence software maintenance as at 3 October 2007.
This release has been made available after the Confluence 2.6 release date. This 2.5.8 version is for customers who want to fix the issues listed below, but do not want all the new functionality and theme changes in Confluence 2.6 yet.
Upgrading to Confluence 2.5.8
Upgrading Confluence should be fairly straightforward. You can find instructions here. We strongly recommend that you backup your
confluence.home directory and database before upgrading!
Changes in 2.5.8
Here's a complete list of the bug fixes in Confluence 2.5.8: