I typically update all my software fairly regularly. I noticed a while ago that I have an old version of Adobe Acrobat Reader even after doing the updates many times. I finally I decided to uninstall Adobe Acrobat Reader 8.something so I could install the latest version.
I was reminded that I need to do this when I went to the Secunia web site and saw the latest Adobe Acrobat Reader advisory - which unfortunately includes version 9:
Adobe Acrobat Reader - Memory Corruption Vulnerability
This particular vulnerability above is only confirmed for Linux but chances are it occurs on other operating systems as well.
Additionally recently someone I know was using Adobe and some rogue JavaScript code caused him some problems on one of his machines - which is how I got into look at the whole Adobe Acrobat Reader update problem in the first place.
Interestingly enough, after uninstalling Adobe Acrobat Reader version 8, I try to go to the Adobe web site and when I click the link to install the most recent version of Adobe I got an error saying my IP was blocked. Ok so I'll just jump on a different network. That IP was blocked too. Ok that's odd. I went to a completely different machine and was able to click the download link. So I came back to document all of this in my blog - and suddenly now I can download again.
One thing I don't like about Adobe's web site is that the download is in HTTP, not HTTPS. How do we know files and bits and bytes aren't getting altered in transit?