My clean WordPress installation (with 11 plugins and WP Super Cache activated) on http://aranelsurion.org is pretty slow, and giving out random internal errors to visitors. The worst part of it; sometimes it just redirects them to 404 page, even if the page actually exists. This is very misleading. Even disabling all plugins don't help much.
Any ideas on getting my -one and only, low-traffic- blog, to, at least, usable condition?