Hi should we upgrade jquery ui to version 1.10.4. even though we recently upgraded to version 1.9.2 we could upgrade to 1.10.4 in Mediawiki 1.25. The main difference is it removes internet explorer 6 support which as long as internet explorer 6 users can edit and view the page it wont matter to them. here is the changelog jqueryui.com/changelog/1.10.0/