I have Windows 7/64 machine and a 12 Mbps DSL from AT&T - nothing sensational but adequate even for a journalist (aka Enemy of the People) on the computer pretty much 24/7.
The problem: after a long time of using Opera and Chrome simultaneously and well, I clicked on a Network selection inadvertently (I don't know what it was, cannot recreate it) and the Internet Access logo changed, but service didn't.
At the same time, Opera went haywire: there are a few Speed Dial items that work as before (Facebook, Nextdoor), but others just keep stalling and so do addresses entered on top, except Google.com.
Yes, I updated Opera, then deleted and reinstalled it - same problem.
I now use Chrome for most work, but regret Opera going crazy and wish I knew what to do. Suggestions would be appreciated here or to JanosG [at] Gmail.com. Mahalo.