I have a bad internet connection.
When it fails, but then reconnects, while Opera is loading a webpage, Opera appears to be running, but nothing happens (no further data is downloaded from the webpage site).
If I stop & relaunch Opera, it continues OK, unless Opera did not register/make-note-of(?) the last Tab being loaded.
Made to discover
Version: 33.0.1990.115 - Opera is up to date
Update stream: Stable
System: Ubuntu 14.04.3 LTS (x86_64; Unity)
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36 OPR/33.0.1990.115