to disable opera speeddials

One of the special feature of Opera browser for allowing easy access to the favourite sites is Speed Dials. When you open a new tab, it displays a list of small capture of website thumbnails, to click one of them will open the website quickly. Speed dial was first introduced by Opera in 2007 and now the other browsers also implement it. Some people don't like the Speed Dials because of some reasons. You can disable Speed Dials with the following steps:
In the address bar of Opera type about:config and press enter, then you will see the Preferences Editor. Scroll down and click User Prefs category. In the User Prefs category, find Speed Dial State and change its value from 1 to 3 or 0. Click on the Save button that is shown at the bottom of the User Prefs category. Now you could test the disappearance of the speed deals by clicking the new tab button.