I know this stuff isn't working, but I thought that some symptoms might be
useful in troubleshooting the problems:

I signed in using the RHN client on my RH7(gold) system (from work).  That
went well, and apparently registered me properly (where does the RHN client
log itself?).  However, on attempting to log into the web site, I was
denied with the error that my username was already in use.  Since I used
"panic" as my user ID, I thought, okay, that might be (on the first day
though?).

However, on attempting to re-run the registration client, the client failed
when I clicked Next on the first screen -- straight lockup, no traceback,
it might be just hung trying to talk to the server? (firewall?)

Next I tried to log into the website.  If I try to build a user account
named "panic", it returns the error that that username already is in use. 
If I try with anything else, it completely fails to return a response
(response contained no data error from Netscape, Mozilla M17 just waits and
waits and waits). (firewall?)

If I log into the RHN site with "mdrew" and my password, it works and I get
to the system profile configuration page.  "mdrew" is my login for the
forums.  So the user databases are the same, which would explain the
"panic" errors -- someone already has that login, and not me. :)

I'll try some system profiling and see if I can't break that.  Cheers,

Panic