• Password request throttling added, allowing wikis to limit the number of password e-mails sent. This is in response to common complaints about vandals and problem users requesting passwords at high rates to annoy users. (Rob Church)
• Numerous internationalization/language improvements added.
• New magic words {{BASEPAGENAME}} and {{BASEPAGENAMEE}} were introduced, which provide the first-level "directory" of a page (this article's values, for example, would be "Wikipedia Signpost/2006-05-15" and "Wikipedia_Signpost/2006-05-15", respectively) (Rob Church)
• New magic words {{NUMBEROFPAGES}} and {{CURRENTVERSION}} were introduced. The former provides the current number of pages (not articles), while the latter provides the current version number of MediaWiki. (Rob Church)
• Special:Wantedpages now ignores user and user talk namespaces, and uses optional stub link coloring as defined in user preferences. (Rob Church)

• Conversion of special pages to use Template:Plural, rather than having different messages for singular and plural usages. (Niklas Laxström)
• Wiki-text now enabled on MediaWiki:Filewasdeleted (Rob Church)

• Gallery links now register in link tables (Rob Church)
• Link autonumbering fixed for all recognised protocols (Ashar Voultoiz)
• Add extra input checking and validation when setting preferences and fix injection vectors (Brion Vibber)

Brion Vibber made some changes to the database dump code to make it "almost self-correcting".

Other server-related events, problems, and changes included:

• Installation of Nagios at http://nagios.wikimedia.org
• srv89, srv97-120 in service
• frwiki database dump restarted twice after errors
• ImageMagick, LaTeX support, and other programs installed on bart