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/955/
http://www.vuxml.org/freebsd/77b9f9bc-7fdf-11df-8a8d-0008743bf21a.html
Insight
The following packages are affected:
opera
opera-devel