Sebastian Krahmer (SuSE) found two issues in Acrobat Reader, both allowing remote code execution upon viewing a PDF file.
One is for Acrobat 7 and requires you have the system-mailer as your default mailer.
The other is for Acrobat 5 and requires that the webbrowser is 'mozilla-like' and no instance is running already when the PDF is viewed.
Adobe is working on a fix.
Doesn't look like high prio on Adobe stack. Or maybe it was related to the
recently released problem.
I think we should keep this one closed until (if) it surfaces again. Feel free
to reopen if you disagree.