I used Advanced Config, but it was more complicated that I imagined to get it working completely.
In Advanced Config, press Menu > More settings > Connections > Check "Disconnect after", I use 10 seconds.
Now, the reason why your connection is still staying open half the time is because Opera runs in the background. To TRULY close opera, you must do this:
http://forum.ppcgeeks.com/showpost.p...3&postcount=91