I've searched all around these forums, and I don't see anyone who's had this problem. I just installed WP. I tried to add some themes in the themes directory, but they don't show up on the presentation page.
I have changed the permissions in the entire themes directory to 777 for all files and folders- nothing. I REMOVED the default folder and the WP administration pages STILL let me use the default theme! I've logged out of the admin pages, but no effect. Any ideas here?