Summary
The remote host is missing an update to the system as announced in the referenced advisory.
Solution
Update your system with the appropriate patches or software upgrades.
http://www.opera.com/support/kb/view/971/
http://www.opera.com/support/kb/view/972/
http://www.opera.com/support/kb/view/973/
http://www.opera.com/support/kb/view/974/
http://www.opera.com/support/kb/view/976/
http://www.vuxml.org/freebsd/aab187d4-e0f3-11df-b1ea-001999392805.html
Insight
The following package is affected: opera