Okay, after actually getting some decent information from a YAHOO! article I know what this is, and it's ancient news.
When they mentioned the name MANDIANT as a source of information, I tied it immediately to the fake FBI virus, which uses a Flash exploit to lock that fake warning page that tells you that you must have done something truly bad and need to 'pay' ther FBI with a prepaid card for a few hundred dollars...which is not only a scam, it's not permanent, you can copy the URL and place it in the restricted sites list in any IE on another page and then clear your cache/page file/temporary files and do what ever with no problem. AVG Free even blocks it.
More XP scare bullhockey. Carry on and do what you need to.
Better safe than sorry, even if it's more braindead stuff.