KenB - 5:12 pm on Jan 6, 2010 (gmt 0)
It doesn't sound like you have the "feature" installed, so there is no way for people using said plug-in could leave a comment using it AFIK. I wouldn't worry about it, because it doesn't impact your site. If the directory doesn't exist then the files that would be in that directory also don't exist. My bet is that if you look at your logs for those entries you will see that the response code is 404, which means the files were not found.