Log Message:
Update opera to 11.51.

Opera 11.51 is a recommended upgrade offering security and stability enhancements.
Changes since Opera 11.50

User interface
 Fixed 
  * Extension manager utlizes too much CPU
  * Opera Turbo button lost on upgrade if the Status Bar was modified
  * Crash when dragging a button from the Appearance dialog onto the Tab Bar
  * Suggested extensions disappear after second click in [+] window in Speed Dial
  * Extensions are launched even if set not to do so
  * Impossible to manually resize Speed Dial if custom number of columns is set
  * Installed extensions are not filtered out from the suggestions
  * Selecting search suggestion using keyboard is difficult because the first
    search engine is focused by default
  * Opera Link settings always shows Speed Dial Sync status from Opera startup
    value
  * Crashes on cancelling Speed Dial add dialog after clicking the add button
    twice
  * Unite home service is removed from widgets.dat on disabling webserver in
    preferences
  * Opera crashed when clicking on the + sign in Speed Dial
  * Stability improvements

Display and scripting
 Fixed
  * Error in parsing Content-Disposition extension parameters
  * Option elements within data lists shouldn't require value attributes
  * Stability improvements

Mail, news, chat
 Fixed
  * Crash on marking e-mail messages as 'Not Spam'
  * Mail in IMAP sent folder not marked as sent
  * Crash on opening label properties with feeds only

Network
 Fixed
  * 'Long' OCSP/AIA/CRL requests might cause handshake failures if the TLS
    server cuts the connection

Security
 Fixed
  * Fixed an issue that could allow unsecured web content to appear secure, as
    reported by Roland Reck; see our advisory
  * Fixed a low severity issue, as reported by Thai Duong and Juliano Rizzo;
    details will be disclosed at a later date