I have installed opera 11.64 on fedora 16 64 bit operating system, and its run.
below is how I get and install opera browser.
1. go to download page http://www.opera.com/browser/download/
Select distribution and vendor fedora then click download button
so I get the file rpm of opera browser, and place of this file in directory Download.
2. go to Download directory and install rpm packages.
sudo rpm -i opera-11.64-1403.x86_64.rpm
3. checking where is opera placed.
and the output is /usr/bin/opera
4. I run this opera from terminal and from aplications>internet>opera, its work fine.