Opera has closed a security hole that enables attackers to inject malicious code. The vulnerability is found in the code for processing framesets. Other internal changes mainly affect the browser’s overall stability. Opera 11.11 is available to download for Windows, Mac OS X and Linux. The complete list of changes can be found at the Opera web site. You can download the latest version of the Opera browser for Windows or Mac OSX or Linux from the web site here: http://www.falk.de.com/Opera/11.11.”]
Source: http://www.h-online.com/security/news/item/Opera-11-11-closes-a-critical-hole-1245275.html