I wish Opera is or was the safest, but since 'Unite' and 'Sync' modes and the firewall rules it allowed, there has to be no way it is safe. If you turn off all the fruit sure. We could review it, but for default settings, it hasn't been for so long now.
As for the pages loading, all fine for me. But then as you mention Mele20
, so many products are not compliant with anything below XP sp3, IE 7, so I cannot help offer any solutions.--
The only thing necessary for the triumph of evil is for good men to do nothing - Edmund Burke