The Adobe Acrobat and Reader 9.1.1, 8.1.5 and 7.1.2 updates address two security vulnerabilities. Please see Security Bulletin APSB09-06 for details. Adobe always recommends that you install the latest updates.
Note: This Update can be applied to Adobe Acrobat and Reader versions 9.1, 8.1.4 and 7.1.1 on Windows and Macintosh. Full Reader 9.1.1 and 8.1.5 installers are available for Linux and Solaris.