NIS 2010 (17.0.0.136) install files mention Beta. Should it?

I installed NIS 2010 from the upgrade site.  I installed it over NIS 2009.  I never saw any kind of installation complete message after the reboot, but I assume it worked.

 

I noticed the "Install Files" folder was left after the install completed.  It contained 4 files including one named "downloadinfo.txt".  That file contained the following text:

 

9/9/2009
You downloaded and installed the following:
Norton Internet Security 2010


If you need to download the products again, copy and paste this address into your browser, then follow the instructions on the resulting screen:
http://www.norton.com/betafo

Product key(s):

 

Going to http://www.norton.com/betafo ends up on a page telling me "Your Norton Beta installer has failed".  I'm confused as to why I'm the release version has a link to the beta version.  17.0.0.136 is the release version is it not?

 

Also do I need to keep the install folder around.  I was simply going to delete it.