You can probably add it to exclusions maybe, but not sure if that’s possible with websites. I had the plugin disabled myself to get stuff to work for version 9.0.
I am having the same problem with the avast! Online Security ver 9.0.2006.53 Firefox extension last updated Nov. 14, 2013.
I updated my the main avast! Pro at your suggestion. Ver 2014.9.0.2008 def 131116-0.
It does not happen with IE just Firefox with the the Online Security enabled.
I noticed Disqus.com shows up in NoScript after the update but Disquscdn.com does not until I disable the Online Security extension.