A few months ago, I deleted the pretty urls plugin, because it was giving us all kinds of problems.
Now the plugin is removed, there are still many search engine friendly URL's which don't exists
anymore, but instead redirecting them to a 404 page (for search engnes), the URLs goes straight to the homepage.
This is giving us Google problems. What can we do?
So the pretty urls mod didn't removed all the sef urls.
Now the residual urls are still here, but they don't give a 404 page.