Nothing serious, when someone a gets ban or receive any bad experience from PG because of their own stupidity they usually end-up by trying something which can harm PakGamers, this includes hacking attemps, reporting site, bad mouthing etc crap
But I don't know how the hell opera blocked PG without any verification :S we don't even using any invalid SSL etc. Please use some other better browsers like Firefox, Chrome and safari.
PS: You can disable the fraud protection feature of Opera if you don't want to to try any other browser.