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/search/view/929/
http://www.opera.com/support/search/view/930/
http://www.opera.com/support/search/view/931/
http://www.opera.com/support/search/view/932/
http://www.opera.com/support/search/view/934/
http://www.vuxml.org/freebsd/4582948a-9716-11de-83a5-001999392805.html
Insight
The following packages are affected:
opera
linux-opera