Oh, I forgot to mention... if you would like to try mirroring it or see the
logout link, you can register a trial account. This will give you access to
only a slight portion of the site which is normally not freely accessible.

I also just noticed in the log:
20:12:10 Error:  “Bad Request” (400) at link passfire.com/* (from
primary/primary)

Doesn't that mean the primary root or something is not accessible by HTTrack?