Opera was updated to version 12.1, fixing various bugs and security issues.

http://www.opera.com/docs/changelogs/unix/1201/

Fixes and Stability Enhancements since Opera 12.00
General and User Interface

Several general fixes and stability improvements
Website thumbnail memory usage improvements
Address bar inline auto-completion no longer prefers shortest domain
Corrected an error that could occur after removing the plugin wrapper
Resolved an issue where favicons were squeezed too much when many tabs were
open

Display and Scripting

Resolved an error with XHR transfers where content-type was incorrectly
determined
Improved handling of object literals with numeric duplicate properties
Changed behavior of nested/chained comma expressions: now expressing and
compiling them as a list rather than a tree
Aligned behavior of the #caller property on function code objects in
ECMAScript 5 strict mode with the specification
Fixed an issue where input type=month would return an incorrect value in
its valueAsDate property
Resolved an issue with JSON.stringify() that could occur on cached number
conversion
Fixed a problem with redefining special properties using
Object.defineProperty()

Network and Site-Specific

Fixed an issue where loading would stop at "Document 100%" but the page
would still be loading
tuenti.com: Corrected behavior when long content was displayed
https://twitter.com: Fixed an issue with secure transaction errors
Fixed an issue with Google Maps Labs that occured when compiling top-level
loops inside strict evals
Corrected a problem that could occur with DISQUS
Fixed a crash occurring on Lenovo's "Shop now" page
Corrected issues when calling window.console.log via a variable at
watch4you
Resolved an issue with Yahoo! chat

Mail, News, Chat

Resolved an issue where under certain conditions the mail panel would
continuously scroll up
Fixed a crash occurring when loading mail databases on startup

Security

Re-fixed an issue where certain URL constructs could allow arbitrary code
execution, as reported by Andrey Stroganov; see our advisory
Fixed an issue where certain characters in HTML could incorrectly be
ignored, which could facilitate XSS attacks; see our advisory
Fixed another issue where small windows could be used to trick users into
executing downloads as reported by Jordi Chancel; see our advisory
Fixed an issue where an element's HTML content could be incorrectly
returned without escaping, bypassing some HTML sanitizers; see our advisory
Fixed a low severity issue, details will be disclosed at a later date

Advisory links from above:
http://www.opera.com/support/kb/view/1016/
http://www.opera.com/support/kb/view/1026/
http://www.opera.com/support/kb/view/1027/
http://www.opera.com/support/kb/view/1025/