Opera 12.12

[A Guy]

Fixes and Stability Enhancements since Opera 12.11

General and User Interface
Several general fixes and stability improvements
New option ‘Delete settings and data for all extensions’ option (off by default) in the Delete Private Data dialog
Corrected an issue where using the 'Delete Private Data' dialog could delete extension and settings data
Redesigned the 'Delete Private Data' dialog to be more usable with small screens
Fixed an issue where quitting Opera while in fullscreen mode could cripple the interface on the next start-up

Security
Fixed an issue where malformed GIF images could allow execution of arbitrary code; see our advisory
Fixed an issue where repeated attempts to access a target site could trigger address field spoofing, as reported by Masato Kinugawa; see our advisory

UNIX-only
Fixed an issue where private data could be disclosed to other computer users, or be modified by them, as reported by Jann Horn; see our advisory

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A Guy