banner_screenshot is a cron based tool that's supposed to run on samarium (frdata.wikimedia.org) and take screenshots of various views of various banner campaigns, and store them for posterity.
It appears to have left a lockfile behind on 11/14/2016 and no banners have been collected since that date. I just removed the lockfile.
This raises the question--is there any reason to continue supporting this? Does anyone use it?