Conclusion: I ended up DLing the update at work (where thanks be, my browser already cached the serial number from the last time I got something off the site). Seriously, if a download chokes, it chokes, but resuming it should be possible. Also, if it's a patch rather than the full application, what's the point of putting it behind a serial authentication? Offhand I can't think of any other apps (big company or small) which require this, unless TPTB at e frontier are trying to track the number of licensed P6 users who still use the application.