Opera 10.53 for Windows changelog
Release date: April 30, 2010
Opera 10.53 is a recommended security and stability upgrade. Opera highly recommends all users to upgrade to this version to take advantage of these improvements.
Changes since Opera 10.52
Fixed an issue where multiple asynchronous document modifications could be used to execute arbitrary code; see our advisory (http://www.opera.com/support/search/view/953/