There's another problem I've encountered: the back button doesn't work. Nothing happen when I click it. I can still go back using mouse gestures and through the menu, and the forward button works normally. It's just the back button that doesn't seem to work.

I use OS X 10.10.2. All of the videos on that site work.

I switched to other web browsers during the summer; when decided to try Opera once again I noticed that the same problem remains.

I've had problems watching youtube the last few days. Some videos work fine, but when I try to watch other videos, I get only the audio (with a black screen.)

My Opera should be updated to the latest version (30 something).

I tried that, but it didn't solve the problem. I've also tried to reinstall Opera, but the problem remains.

It's 27.0.1689.69, and claims to be 'updated'.

I have encountered a problem the last few days. When I log in to Facebook, or a myriad of other sites, I usually check the little box that let me stay logged in. But the last few days, this has not worked when I use Opera - each time I open the browser to log in after having been away for a while, I have write the password and username again (even though I checked the 'keep me logged in' or 'remember me' etc. box the time before).

This does not happen when I use Safari (which keeps me logged in), but only (to my knowledge) Opera.