Opera released latest version browser version 10.63, which fixes security issues and few other usability issues.

Security Fixes

Fixed an issue that allowed cross-domain checks to be bypassed, allowing limited data theft using CSS

Fixed an issue where manipulating the window could be used to spoof the page address

Fixed an issue with reloads and redirects that could allow spoofing and cross-site scripting

Fixed an issue that allowed private video streams to be intercepted

Fixed an issue that caused JavaScript to run in the wrong security context after manual interaction;

Read more on the Change logs here

Download the latest version opera browser from here