You may need to change the default settings in Opera 5 beta to get it to work properly (and not freeze up).
To do this:
In Opera 5, press the Wrench icon in the lower right corner
Change the selection from 'Socket' to 'HTTP'
Press 'Back' or the Escape key until you get back to the Speed Dial page
When I had it installed you couldnt get that far on the S2.. As soon as you opened the program it would go to the white screen and freeze there.. I could get out of the program but I could not close it.