have u guys changed your custom user agent?
1) type "opera:config" into your opera address bar
2) select "user prefs"
3) select "custom user agent"
4) enter the following "Opera 9.7 (Windows NT 5.1; U; en) Sprint Touch Pro 2"
(of course you can change that to reflect you opera version\phone)
this solved lots of issues for me like
1) unable to view some desktop version of sites
2) "watch video" link would never show on m.youtube.com
3) unable to input text on some websites
4) many others
let me know if you guys need help but i think this should solve your problems
if this helps, dont forget to hit thanks