Oracle has released its quarterly security fixes for Java. The new Version 6 Update 33, addresses 14 identified security vulnerabilities; at least one of these is extremely serious, because it can be exploited remotely without a login. (There is also a Version 7 Update 5 available for developers, with the same fixes.) The new versions also fix some minor bugs. Further information is available in the Critical Patch Update Advisory.
The new version is available for almost all platforms: Linux, Windows, and Solaris. Apple supplies its own versions of Java for Mac OS X; there is usually a time lag of at least a few days after Oracle releases a new version before an updated Mac version is available
Because of the security content of this release, if you have Java installed on your system, I recommend that you install this update as soon as you conveniently can. You can obtain the new version, including the browser plug-in, from the download page for Version 6 Update 33, or the download page for Version 7 Update 5. Windows users can also use automatic updates to get the new release.