Adobe has a bunch of security fixes for their products and I highly recommend you get the fixes to prevent your system from being compromised. The fixes are free and cover the following products:

SUMMARY

A critical vulnerability has been identified in Adobe Reader 9.1 and Acrobat 9.1 and earlier versions. This vulnerability (CVE-2009-1492) would cause the application to crash and could potentially allow an attacker to take control of the affected system.  A second vulnerability has also been reported that appears to affect Adobe Reader for UNIX only (CVE-2009-1493).

Adobe recommends users of Adobe Reader 9.1 and Acrobat 9.1 and earlier versions update to Adobe Reader 9.1.1 and Acrobat 9.1.1. Adobe recommends users of Acrobat 8 update to Acrobat 8.1.5, and users of Acrobat 7 update to Acrobat 7.1.2. For Adobe Reader users who can’t update to Adobe Reader 9.1.1, Adobe has provided the Adobe Reader 8.1.5 and Adobe Reader 7.1.2 updates.

AFFECTED SOFTWARE VERSIONS

Adobe Reader 9.1 and earlier versions.
Adobe Acrobat Standard, Pro, and Pro Extended 9.1 and earlier versions.

SOLUTION

Adobe Reader

Adobe Reader users on Windows can find the appropriate update here:http://www.adobe.com/support/downloads/product.jsp?product=10&platform=Windows.

Adobe Reader users on Macintosh can find the appropriate update here:http://www.adobe.com/support/downloads/product.jsp?product=10&platform=Macintosh.

Additional information can be found on the Adobe site located here.

Comments welcome.