Opera 10.54 has been released:
Change log
http://www.opera.com/docs/changelogs/windows/1054/
Download link
http://www.opera.com/
Security updates that Opera is not yet ready to reveal the full details
Security
Fixes
* Prevented Opera from being used as a vector for a font issue in the underlying operating system, as reported by Microsoft's security team; see our advisory (
http://www.opera.com/support/search/view/954/).
* Fixed an extremely severe issue; details will be disclosed at a later date.
* Fixed a highly severe issue; details will be disclosed at a later date.
* Fixed a moderately severe issue; details will be disclosed at a later date.
* Fixed a less severe issue; details will be disclosed at a later date.