Opera today released a update to Opera 9.5 addressing several security and stability issues. The browser comes in with several improvements such as better drag and drop for tabs, removed saving of images from appearing in the transfers window (we hated this), fixed issues with Yahoo Mail and TinyMCE and more.
The Opera team recommends users to upgrade to the latest version though it is not a mandatory update.
Learn more about the latest changes in Opera 9.51.
Download: Opera 9.51