It seems like every time we turn around there’s another critical update that we need to install for Adobe Reader in order to patch a whopping security hole, and there’s another one waiting for us right now.
But this time there’s a bonus: a critical update for Adobe Acrobat as well. You can download the updates for both Adobe Reader and Acrobat on this page.
Or… You can simply uninstall Adobe Reader altogether and install an excellent free replacement called Sumatra PDF. This post explains why and how.
Acrobat is worth keeping in my opinion, but be sure to update it immediately whenever a new update for it is released.