I try it, also I've cleared browser history, cookies etc and nothing changes, at the Safari everything looks good.
Now, I've finished with the installation and I see the login page is ok and the ACP.
Everything looks good to me, and I've just checked the ACP with that version of Opera myself and it seems fine. I'll double check the installer tomorrow.
Yeah, Opera seems fine to me (don't worry about the version number, as soon as 2.0.0 is out, our internal version number gets bumped to 2.0.1, but we're running the same code you are at this point)
No problem at all - better to report a problem and find that it was okay after all than to let it slide and find that it's an issue for everyone later.