When preparing a feature I see that there are a number of values beginning nfs_ in the Strongarm section.
What are these nfs_ values and do I need them in my feature?
Gonna go out on a limb and guess that they come from the Node and Comments Form Module, which uses
nfs as a prefix for variables.
Failing that, have a look through your contributed modules and see what you have that can be shortened to NFS - that's probably the culprit.