Reports of about malicious users tricking Adobe Reader 9 into triggering an exploitable crash in Adobe Flash 9 and 10, the US Dept. of Homeland Security's CERT cybersecurity team is asking users and administrators everywhere to turn off Flash video in their Web browsers. This prompted Adobe, whos’s now rating the exploitable issue as "critical." Adobe is not advising users to take such drastic measures as disengaging Flash in their browsers (which would make it very hard to watch YouTube). What it's suggesting instead is that users manually delete the file %ProgramFiles%\Adobe\Reader 9.0\Reader\authplay.dll, which’s a library that Adobe Reader and Acrobat use to trigger embedded Flash and Shockwave videos.