Security Hole discovered in Adobe Reader.
Keep an extra vigilant eye out for suspicious PDF files. Adobe has discovered a security hole and they plan an update in Jan 2012, more than a month from today.
Adobe Reader X (10.1.1) and earlier versions for Windows and Macintosh, Adobe Reader 9.4.6 and earlier 9.x versions for UNIX, and Adobe Acrobat X (10.1.1)
via blogs.adobe.com