Hi Eugene,
Thanks for reporting the issue you experienced with access to w3DNA. I communicated with Dr. Olson, and here is her reply:
Thanks for the note re the w3DNA server. The BioMaPS staff, which we have contacted, has been helping with the website since Guohui left. Sometimes the site overflows with extraneous data and is then relaunched.
Moreover, Dr. Olson has asked Andrew Colasanti to help with w3DNA-related issues.
I've checked w3DNA, which seems to be functioning properly. If you have any further problem, please report back.
Thanks,
Xiang-Jun