Now this is a weird glitch. My All Images gallery hasn't updated since March 27, even when I add images directly to it and not through any wikis or forum posts. The weird part comes in this:
I've uploaded all of those images in the past two days (except for Muscle Man; I have no clue what that's doing in there). They appear in my gallery when I scroll past the first 20 or so images, so the site itself is keeping track of what I upload. The problem seems to be with the actual image gallery page.