The official documentation page to install opera says to add this:
deb http://deb.opera.com/opera/ stable non-free
ended up in the url field of the edit source dialog box. It ended up there from a previous unsuccessful attempt (epic fail - I destroyed updater, software center, and synaptic). The words stable and non-free are in other fields: stable is in 'distribution', i will change that to raring so that it looks like the official ubuntu documentation page. non-free is in 'components'.
So what should be in the url field?
I will change distro to raring.
Is non-free ok to be in component?
4theye - i will try - I don't know how:
hope that woked.