According to a new security bulletin by Adobe, there's critical security problems in Adobe Reader, and you should update immediately to Adobe Reader 9.3.2 or 8.2.2
Adobe Reader users on Windows can also find the appropriate update here:
http://www.adobe.com/support/downloads/product.jsp?product=10&platform=Windows.
Adobe Reader users on Macintosh can also find the appropriate update here:
http://www.adobe.com/support/downloads/product.jsp?product=10&platform=Macintosh.
Adobe Reader users on UNIX can find the appropriate update here:
http://get.adobe.com/reader/.