This is odd. I just updated the default style for my site, and it is the only style, so everyone should be forced to use it. Most people do, although a few are still saying they see the old style.
Ok, so to see if they were lying or not, I checked their profile. It did say "always use default". So it should work. I logged in as that user to double check, and sure enough it is still showing the old stylesheet. So I mean, why is this happening, and how can I fix it? It doesn't add up