A number of security issues have been fixed in Opera, click here to see the full changelog.

"Fixed a URI obfuscation weakness enabling impersonation of legitimate web sites. Illegal characters in addresses will be stripped. This addresses Security Focus Bugtraq ID #10517.
Solved frame injection vulnerability that allowed for spoofing (Secunia Advisory SA11978).
Solved certificate verification problem."

Click here to download version 7.52 now.