Meg and Rena have done a great job in finding more bugs in the Beta version. Sven and I are going to have a concentrated bug killing session tomorrow.
A new robot is also going to start running: Darius the Dead Link Manager. Darius will be responsible for removing dead steps in trails (i.e., 404 URLs). We were considering preserving trail links and enabling users to access missing pages via the the Way Back When Machine at archive.org but it seems too slow. Our tests show a 10+ second response time.
We may return to this system later if speed improves or we find a better archived page provider.