Forum:Uncategorized Files Not all there?

I decided to tackle Image Organization (and duplicates deletion) for my Wiki where we currently have 6,472 images. So I am going by visually of image types on the Special:UncategorizedFiles and there are only 2,000 but only 1615 of our images are categorized. Going down the Special:ListFiles has no previews makes for very slow progress. Do I have to file all this current 2k UncategorizedFiles before I can see more ok does it not recognize these other images? And also how long before the wiki updates my changes 24 hours? 03:04, October 14, 2011 (UTC)