Opera 10.50

# User interface

* Added
- Download acceleration software compatibility (user option); integrates a user's favorite download acceleration software with Opera
> Check box activation located at: opera:config#UserPrefs|UseExternalDownloadManager
- A keyboard shortcut for new private windows: Ctrl+Shift+N
- Support for View Modes through the W3C Widgets Module API:
> See: W3C Widgets 1.0: View Modes Media Feature (http://www.w3.org/TR/widgets-vmmf/)

* Improved
- Created a visual design to distinguish between private and non-private windows
- Removed hardcoded icons from HTML5 <input> elements
- Skins can now specify the system color scheme as default
- Changed the private mode icon in the context menu
- Translations have been updated in Opera Unite applications

* Fixed
- A white line appearing between a maximized Opera window and the Vista/Windows 7 taskbar
- Closing tabs from the Task bar leaving a ghost tab in the Task bar list
- Opera Link only partially synchronizing data (bookmarks)
- A problem when restarting Opera with "Manage bookmarks" and one or more tabs open
- Windows Media Player plug-in not initializing
- An issue when enabling the print preview option
- Data loss occuring when shutting down the computer while Opera is still closing
- Context menus not appearing in source view
- A problem when opening a private tab
- Only part of a page being visible with Aero Peek after zooming in
- A problem when correcting spelling with the keyboard in single-line form fields
- Several tab-modal dialog problems
- Minimized tabs not resizing to window when activated
- Minimized tabs not displaying after restart
- Popups being dragged out and not being able to be brought back in
- Non-modal dialogs disappearing into the browser chrome
- Pop-up windows not being skinnable
- Gmail not working in private browsing mode
- A problem setting an image on a Web page as a Speed Dial background via the context menu
- Switching the color scheme from "Windows Aero" to "Windows Vista Basic" and back again corrupts title bar
- A scrolling issue which freezes the user interface
- Opera Turbo not working correctly
- An issue with "Find in page" search if search string starts with a space
- Several issues with Adobe Shockwave

# Display and scripting

* Added
- Video seeking
> Now possible to seek through videos that are not completely downloaded
> When skipping forward, unwanted sections will not be downloaded
> See: W3C section 4.8.7 The video element (http://www.w3.org/TR/html5/video.html)

* Improved
- Numerous updates to the Carakan JavaScript engine
- JavaScript resize clipping, and automatic maximizing of restored tabs and child windows
- The DEP (Data Execution Prevention) message

* Fixed
- An issue when disconnecting from Opera Dragonfly remote debug mode
- A problem when embedding with SVG content
- Uninitialized data being displayed when using content blocking
- Several issues with Microsoft Silverlight
- An issue with WinXP toolbar integration
- A potential memory leak in context menus
- An issue with User JS and Browser JS

# Mail, news, chat

* Added
- Support for localized webfeeds and webmail providers

* Fixed
- Absense of context menus for the fields: To, CC, Subject, etc.
- Attachments being displayed multiple times after deleting mail
- Occasionally opening mails in new windows shows a blank mail window
- An issue when replying to an e-mail
- A problem when double-clicking on "Sent" mail

# Network

* Added
- <video> seeking using HTTP byte range requests
> Created HTTP range based cache subsystem to support <audio> and <video>

* Fixed
- Various issues with Opera Widgets
- A firewall alert occurring when starting Opera on Windows 7

# Security

* Fixed
- Fixed vulnerability in Renegotiation feature of the TLS protocol
> See our advisory (http://www.opera.com/support/search/view/944/)
> See our Opera Security blog article (http://my.opera.com/securitygroup/blog/2010/01/23/alpha-testing-tls-renego-fix)
^ For your reference, this security fix was implemented in the Opera 10.50 (with Opera Widgets for Desktop) beta 1 for Windows.
- Fixed a moderately severe security issue.