User likes to decide what they want to use

if they want the automatic update to be well accepted they must put on Opera a button with which is possible to

renounce to the last version installed and go back to the previous version, after the user has seen the new version and

decided if all is fine or not, don't forget that sometime happens also that a new version of a program crashes or didn't

work perfectly on all the PC, and this independently by the agreement that the user can have or not have for the new