Last week we released VaultWiki 3.0.4 and 2.5.7 Patch Level 3, and have delayed this on-site announcement until our existing customers could be properly contacted about the patches. These versions address a total of 3 critical security concerns, 2 of which involved possible Denial of Service attacks. Due to this and other showstopper bugs that have been addressed, we recommended that customers update as soon as they are able.
Also in VaultWiki 3.0.4, we have fixed over 40 other bugs, including redirects not caching correctly or showing the correct comments, and AJAX title edits "disappearing" articles. As for functionality changes, the import system now handles article history properly.