Opera Software has released Opera 9.64 that fixes multiple security vulnerabilities.

QUOTE
Opera 9.64 is a recommended security and stability upgrade, incorporating the Opera Presto 2.1.1 user agent engine. Opera highly recommends all users to upgrade to Opera 9.64 to take advantage of these improvements.

Release date: 03.03.2009


For full details see:

http://www.opera.com/docs/changelogs/windows/964/

Opera 9.64 can be downloaded from

http://www.opera.com/browser/download/