In a security bulletin released on Tuesday, Adobe cites "critical vulnerabilities" that could crash your apps or "...potentially allow an attacker to take control of the affected system." Definitely something you'll want to avoid. They recommend that anyone using version 9.2 and earlier update to Adobe Reader 9.3 and Acrobat 9.3 right away. Likewise, those using Acrobat 8.1.7 should update to version 8.2.
You can get all of the details and downloads from Adobe here. Get patching, folks. You'll want these older versions off of your Macs. As usual, we ask that you let us know if anything goes wonky after updating.
[Via PC Magazine]