As everyone knows by now, the DotNetNuke security team is currently working on resolving a few security vulnerabilities which have been reported to us over the last couple of days.  We have fixes checked in for two of the issues and are working on a fix for a third.  Once that fix is complete, and we have had a chance to properly test those fixes, we will create the needed security bulletins.  We expect to have all of this completed in the next few days.  In the meantime, you can and should take some basic security precautions.  I have outlined those in my Blog post.  Contrary to anything else you may have read, we do not consider any outstanding vulnerability to be a Critical Vulnerability as defined in our security policy.  A good backup is a reasonable security precaution that would minimize the impact should someone discover and exploit any of the known vulnerabilities.