The .htaccess file on the server may not be rewriting those URLs properly.
The rss feed is at example.com/wordpress/wp-rss2.php for example, and the rewriterule associated with this might be borked.
Be sure that your rewrite rules in the .htaccess file match those generated by the permalink structure.
Your files are there when I manually enter the addresses, though the rss / rss2 feeds appear to be broken.
I’ve changed my .htaccess with a new one including the mod_rewrite indicated by WP Admin for permalinks: now I’ve received an error_505 and I haven’t been able to access the site since I’ve restored a blank one… It could depend on my hosting? The host does not permit server 2 server connections, so I can’t use RSS/Atom feed? 🙁
the error was 500, not 505… :-\
problem solved: my hosting, unfortunatly, does not permit .htaccess/.htpasswd files… so I can’t configure custom permalinks…
To be honest, that sounds like time for a new host.
.htaccess has a lot more uses (such as preventing hotlinking, having password protected areas of your site) so regardless of the wp permalinks, I’d move.
Unfortunatly, I know… my problem is that I’m in a free hosting which has not a lot of features I need, but a new law force webmaster to send all they publish to the Italian government twice a year, or the site will be closed by police… and if I pay for it, I’ll be so angry. Anyway (sorry for the OT), could anyone tell me which is the file that controls the permalink settings? So I’ll update that by FTP, and I think my problem will be solved… thanks for all 🙂