I just installed pic app http://wordpress.org/extend/plugins/picapp/ and when I uninstalled it, I noticed my archive listing was showing "Uncategorized" with 70 postings. When I clicked on that, it said no posts were found. I have excluded that from showing in the archive listing using the Advanced Category Excluder, but I am wondering why that happened. Any one have any ideas? For some reason, I am worried about it affecting some other part of my blog site, but I really have no reason to except a hunch.