Today Flash installed version 11.9.900.170 and since then, some Youtube videos won't play in Opera. They just endlessly show that rotating animation that is supposed to mean the content is downloading. Here are the three links I've found that are doing it:
The links work fine in Firefox and Chrome. Maybe this is an issue with Opera itself?
But thanks to the devs for a wonderful browser. I am staying as loyal as possible. I love Opera when it works.