I'm sorry to hear about your disappointment, but all those things are things we're of course actively working on. If you want to email me at yegg@duckduckgo.com I'd love to get to the bottom of them.
--Speed has improved a lot in the past three months. Where are you located? I'd love to trace this down. 2-3sec is way outside the norm and our internal metrics show much, much lower.
--Same with search quality. We'd love specific examples if you remember any: https://duckduckgo.com/feedback.html -- that's the best way we improve. Are you using a region setting?
--We do not use indirect results by default on our main site. Check out our privacy policy, specifically the section on search leakage: https://duckduckgo.com/privacy.html. On HTML5 browsers we can do an internal postMessage to strip the referrer header in-line. However, if you open in a new tab/window, we cannot do that. Nevertheless, you can turn this behavior off on the main site in the settings (under privacy): https://duckduckgo.com/settings.html. If you're using a modern Safari though, this shouldn't happen. Again, would love to figure this out.