Alright, I've been doing a little template tinkering with olympus. I changed some of the images in imageset.imageset.cfg to not include the{LANG} section, because... well, there's nothing written, so they shouldn't be in the language folders. Anyways, I save the file, regresh the page, and the images are broken, I clear the cache in phpBB and on the server and do a ctrl+shift+f5 in firefox, still broken. I check the source, it's still pointing to the language folder!
I also changed the logo, and changed the dimensions in imageset.cfg to reflect the new size, and no matter what I do, the page is generated with the old width and height.
*edit* n/m, turns out you have to delete the imageset, re-add it, and change the style to use the imageset again. Removing the style and re-adding it did NOT help.