http://www27392u.sakura.ne.jp/wordpress/?p=146
Stalker's blog has added some kind of notice/warning regarding problems with the update. From what I can gather, Little Busters! wasn't being found when the Ranking Stalker system was querying Amazon, but I can't figure out what it's saying the consequences are. I guess just that it didn't update for a few hours and the admin had to add them manually?