외국 네오윈 사이트에 가보니 아래 글이 있네요. 방금 등록하고 왔습니다.
10주년 기념이라 하루만 등록이 모든 버전에 대해서 free로 제공한다고 되어 있는데, 메일 주소만 넣으니 모든 버전의 시리얼을 보여 주네요.
지금 오페라 8.02인가 하는 것을 설치했는데 좀 이상하게 버벅거리네요. 예전엔 엄청 속도가 빨랐었는데.
참고 하세요.

To celebrate Opera’s 10th Birthday Download.com is offering everyone a free full version of Opera, for one day only. Until version 5 Opera did not have a free version of its popular web browser, but now offers a free version supported by adverts within the browser. Today, however, on their 10th Birthday Opera is offering everyone a free ad-free version of its web browser.

To download a free version just head over to download.com, and to get your free registration click on the link below and get a registration key to use to unlock the browser. Remember, the offer is only available today as Opera celebrates its 10th Birthday.

News source: Get your free Opera registration code( http://my.opera.com/community/party/reg.dml )