I have a similar problem. Every time I open both Opera 42.0.2393.94 Stable and Opera 44.0.2463.0 Dev, running Ubuntu 14.04.5 LTS (x86_64; Unity) This box below pops up 3 times in the upper left hand corner of my monitor!
Enter password to unlock your login keyring
I have to cancel it 3 times to get rid of it every time Opera is opened. How can you make this message stop from popping up all the time?
I have the same problem with golem.de. No video-player is shown. I think this is a general problem related with FFmpeg because opera isn't capable to play H.264 videos anymore.
This is the wrong forum for such a post (you are not talking about the browser nor Linux), and while not an exact duplicate it has been discussed before. Post in one of the existing threads about the topic, or wait for them to fix it.