A couple weeks agothe many software products that had recently been updated with important bug fixes. Among these was the Adobe Acrobat Reader whose self-updating feature is invoked with Help -> Check for Updates...
There is a bug, however, in the self-update process.
On a Windows XP machine running version 8.1.0 of the Adobe Acrobat Reader, the self-update scan found an available update to version 8.1.1. The install of this update ran just fine. Someone who knew that the Adobe Reader needed to be updated, would think they had done their due diligence and move on. The problem is, the latest version of the Adobe Acrobat Reader is 8.1.2.
These are the worst types of bugs, those where everything seems to be OK. And, bugs in the software designed to fix bugs, is irony at its best.
It used to be that when you downloaded the Adobe Acrobat Reader, you got an old version with known bugs. At least, Adobe has corrected that. Fresh installations of the software currently install version 8.1.2.