Well, first off, it's really hard to look for problems with a folder if you don't tell me what folders you're having problems with. :-) Secondly, there most likely IS something in those folders... a cursory glance at your public_html directory listed at least 8 hidden files. My guess is your FTP client or whatever is set not to show hidden files. A less likely option is that you have the folder set to read only, and your client doesn't know to change that before trying to delete it. The least likely option is that there really is some file or folder that's owned by another user (such as the webserver) and you genuinely don't have permission to delete it. Check the first two and let me know, as the last one is something I'd have to manually correct. If you're still having trouble, make sure to tell me exactly what files/folders, because I'll probably just delete them directly.