I haven't read thru this entire string, but if the OP wants to see what I see for this page:
http://forums.opera.com/topic/72/full-url-in-opera-17-any-chances
then you need to enable advanced/power user settings (there's a discussion on that somewhere in this forum but I don't have time to look) and check
"Show full URL in combined search and address bar"
I don't remember which version of Opera first allowed that-- could be later than 17. I'm now on v 24, but have had it checked for a long while.