Откройте - http://www.youtube.com/html5 и убедитесь, что Вы не участник бета-тестирования html5 версии YouTube.

В адресной строке ввести - opera:config#UserPrefs|ShowDropdownButtonInAddressfield поставить галочку и сохранить в конце блока.

bookmarks.adr --- закладки
contacts.adr --- контакты с людьми и назначенными иконками
notes.adr ---- заметки, не экспортируется из меню !!! только сам файл ручками
unite.adr --- чушь
speeddial.ini ---- экспресс-панель
wand.dat ---- пароли сайтов, или Opera link-закладки и пароли востановятся
+++
opera:config#UserPrefs|HotListFileVer2 --- в конфиге указать путь, где лежит bookmarks.adr
opera:config#AddressFile --- указать путь, где лежит contacts.adr
opera:config#NotesFile --- указать путь, где лежит notes.adr
opera:config#MailBox|NotesFile --- дубль notes.adr
opera:config#UserPrefs|WandStorageFile --- указать путь, где лежит wand.dat
opera:config#UserPrefs --- правильность пути и к другим файлам.

DNA-1545 HTML5 fullscreen is not supported at YouTube
DNA-1619 Drawing issues when switching tabs with devtools window open
DNA-2863 Address bar spacing is wrong on Mac
DNA-2871 Icons in the badge should be centered
DNA-3530 Fallback url of Speed Dial extension shown for a second while opening Start Page
DNA-3650 Add to Stash/Speed Dial buttons are not updated properly when the action is done from the main menu
DNA-3848 Link to opera:plugins in "flash disabled message" is wrong
DNA-3994 [XP&Vista - 64] Start page is empty and cannot load page
DNA-4051 Shift clicking a link with target=blank opens a tiny popup
DNA-4148 High CPU/GPU usage with animated speeddial extension
DNA-4279 Installer wizard is too wide in comparison to regular installer wizards used
DNA-4326 Private Window intro page layout is broken
DNA-4372 For SD entries suggestions titles from the Address Bar dropdown are shown in the address bar
DNA-4639 Performance on Mac suffers when recursively repainting the tab bar
DNA-4927 Update the download attention notification
DNA-5048 Context menu on mailto links cleanup
DNA-5162 Toolbars buttons doesn't change position when window size changes
DNA-5165 Font for the text about upgrading current installation in installer should be smaller
DNA-5310 Native tab-switching shortcuts not supported
DNA-5315 Addressbar dropdown incorrect shortening
DNA-5328 middle-button click on "x" doesn't close tab
DNA-5330 Crash in opera::SlidingToolbar
DNA-5342 Crash when D&D SD on SD-extension which is during installation process
DNA-5355 "Always allow popups from ..." should have a checkmark next to it
DNA-5365 Profile import dialog disappear on the first start of Next build
DNA-5369 Create two simple static info pages in case we could not easly restart after a crash
DNA-5370 Add a new setting to disable animations
DNA-5372 Suggestion is incomplete when you type whole string
DNA-5376 We shouldn't suggest to google when internet is down
DNA-5378 Cookie migration fails for large cookies and some domain flags
DNA-5388 Disable extensions and remove session if Opera keeps crashing
DNA-5420 Auto-updating should not be triggered when binary is running from DMG (read only install/demo media)
DNA-5439 ESC when search keyword is in use in address field should only close the dropdown
DNA-5466 Assertion failure when clicking on badge shortly after starting to load URL
DNA-5478 Opera Next Import Opera 12 dialog doesn't show properly
DNA-5614 Migrated notes HTML file should have the exported date
DNA-5618 Cmd-L doesn't select all text in address field when already focused
DNA-5622 [MAC] Some migrated search engines don't work
DNA-5629 Crash when installing and running extension which opens a window without confirming dialog about unknown source
DNA-5638 long addresses will "haunt" your addressbar
DNA-5639 Crash on close in search suggestions
DNA-5645 After using 'Open all' option content of folder is reversed
DNA-5660 Category names appear "undefined" in Discover
DNA-5668 Tab navigation is SD-based after Discover reload (when going back from an article)
DNA-5677 "Reload thumbnail" menu item isn't available for an item in Speed Dial folder
DNA-5725 Crash when clicking "Save" on Save Password sliding infobar after switching to other tab and coming back.
DNA-5734 Not enough space between two text lines in Badge Details in Finnish
DNA-5757 Opera crashes in >__invalid_parameter_noinfo
DNA-5758 Synchronize Discover accross tabs ( including the prebaked Startpage ) to not loose settings changes
DNA-5761 Strings do not fit in Page info pop-out
DNA-5766 Discover picks the best default region/language for the user
DNA-5787 No pretty Yahoo! logo for Yahoo! Norge (and other subdomains)
DNA-5804 Unable to change language
DNA-5805 Crash on closing many tabs
DNA-5811 Opera Final is unable to find Opera 12 x64 profile for migration
DNA-5821 Migration isn't possible on Opera Next
DNA-5822 Shortcuts fail to work after dismissing find toolbar
DNA-5827 Add to Speed Dial page lacks context menu
DNA-5872 Default browser status not updated after setting default browser
DNA-5886 Find in page toolbar needs some polishing on Mac
DNA-5908 [Windows] Download manager popup should never show any scrollbar.
DNA-5923 [Mac] Help menu entries not working
DNA-5964 Cmd-z to undo entries in address field cause chaos
DNA-5967 Missing background page for speeddial extension causes Opera to crash
DNA-6000 Expose country and region to the Start Page
DNA-6048 speed dial jitters when switching the tabs
DNA-6068 Articles on 'Discover' should end either with a '.' or '...'
DNA-6071 Final string for the profile migration dialog
DNA-6072 Opera crashes when adding http://www.cnn.com to Stash
DNA-6074 No Click-to-Play for plugins in Turbo
DNA-6083 [Mac] It is impossible to restore text in address field if focus has been moved elsewhere first
DNA-6102 Speed Dial item dissappears after being in folder and hidden by search
DNA-6110 Less than 5 speeddial extensions shown in the add screen
DNA-6121 Address not expanded when focusing the address field using Command-L
DNA-6123 Command-Option-U should display page source
DNA-6132 Trying to use search engines keywords in private mode crashes Opera
DNA-6144 Address field popup issues on Mac
DNA-6148 Non localizable text in CloseTabButton
DNA-6154 Fix includes in certificate_viewer_mac
DNA-6161 Closing a Private Window while the drop down is open crashes opera, because the profile object is deleted.
DNA-6163 Copying file address duplicates file protocol
DNA-6164 Tooltips for primary buttons
DNA-6171 The problem with the spellchecker module Russian language
DNA-6184 Click the "minimize" button in Stash does not resize content of Stash
DNA-6213 Progress bar in installer wizard not centered
DNA-6216 Find in Page should be shown as "Ctrl + F" at Menu
DNA-6219 Fallback to image when search provider's icon is missing
DNA-6230 In opera://extensions , it seems the "Installed" category should be named "Enabled" instead.
DNA-6234 Error on startup in the start page: Uncaught ReferenceError: favorites is not defined
DNA-6259 Opera crashes when site asks to increase storage quota limit
DNA-6271 1157 Developer built with Final icon and bundle ID
DNA-6275 Ugly window resizing on starting profile with a restored window from previous session
DNA-6276 Renderer crash on webnotifications API use
DNA-6287 navigator.language is always 'en-US' irrespective of language chosen during installation
DNA-6291 All extension buttons are disabled when displaying blocked pop-up notification
DNA-6302 DNA-6241 Ensure that uninstalling Opera 12 Final doesn't affect Opera 15 Final WP1
DNA-6308 Unreadable text in find toolbar in full screen
DNA-6312 Spellcheck in Bulgarian not working
DNA-6318 Extension buttons should not be visible in pop-up windows
DNA-6332 Opera doesn't start with migration with this cookie file
DNA-6339 Some extensions downgrade status of secure pages to insecure
DNA-6341 Copying JavaScript URI copies about:blank
DNA-6342 Cookies not working in Opera extensions
DNA-6343 old Opera 10 profile, due to migration, blocks O15 from running.
DNA-6344 Thumbnail generation fails for hosted app sites
DNA-6361 Assert on shutdown because of calling DeleteWindow on already deleted Textfield.
DNA-6364 Migration algorithm won't look for any other dir that it's own folder name
DNA-6369 'set as default browser' toolbar shown in spite of the installer option enabled (and fails to do so)
DNA-6384 [Mac] Use magnifier image as fallback icon for custom searches
DNA-6385 Typing space in address field in private window remove search entry from drop-down
DNA-6388 Fix for issues with DNA-5355
DNA-6389 Stable icon looks bad
DNA-6391 Option to add shortcut to quicklaunch does not exist
DNA-6395 Thumbnails not generated for sites not acepting HEAD requests
DNA-6397 Re-enable the migration dialog for Opera Next
DNA-6404 After automatic profile migration from O12 , Opera 15 history is trashed with links to individual web elements from particular sites.
DNA-6411 Discover - Sort the rows of articles by "weight"
DNA-6415 Include string translations WP4
DNA-6419 "- Google" copied into the address field when using arrows from keyword search
DNA-6420 Scroll bar blinks up on Speed Dial page when opened
DNA-6434 WebUI part of disabling animations if the no-animations flag is set
DNA-6436 Link to extensions catalog should be corrected
DNA-6454 Speed dials not imported after migration
DNA-6461 Selecting a default search engine in Settings sets the search engine icon for the current settings page
DNA-6464 Crashloop (session wipe) when restarting with opera:settings open
DNA-6533 Update the string for the Opera 12 profile import dialog