I've tried using Opera Widgets and found that they can't seem to access the Internet. Widgets that don't need access are ok, but those that need to cannot. I have found this in the Opera 9 included with VL 6.0 and with an upgrade to Opera 10.10.
Perhaps there is some configuration file to change somewhere, or perhaps there is just some incompatibility. Maybe they only work in Gnome or KDE environments. Anybody know?