If you have users in your organization who use the Opera web browser, be sure they get the latest update, to version 10.63. Released this month, it fixes five security vulnerabilities, including a critical issue with JavaScript policy bypass that could result in cross-site scripting, which in turn can enable an attack to execute code remotely. You can read more about the security issues here:
http://news.softpedia.com/news/Multiple-Vulnerabilities-Addressed-in-Opera-10-63-160658.shtml
And you can download the new version of the browser for Windows here: