weird portmaster 25 problem

[hill at cinergycom.com]

I'm not sure if anyone will be able to help, but here goes.  About a week
ago all of our PM25s (10 of them) starting behaving weirdly.  When a user
tries to dial up the radius authentication seems to work correctly, but
the PPP session never actually begins (see show session, and modem call
output below).  I wouldn't even post anything here except that, the only
way we can get the problem to go away is to quit using radius to
authenticate the connection.  If we add the user and password to the local
user table on the PM25 then this problem doesn't occur.  I don't really
think radius is at fault, I have just exhausted all of avenues and was
hoping someone might have some insight.

We originally had been using radiator 2.17.1 and it had been running
smoothly for about a year.  I have tried upgrading to 2.19, which has made
no difference.  We have also tried ComOS 3.3.3, 3.5, and 3.7.2.  We do not
have enough memory to try 3.9.

Output from show session
Port User          Host/Inet/Dest   Type    Dir Status      Start   Idle
---- ------------- ---------------- ------- --- ----------- -----   ----
S0   -             world            Login   In  USERNAME        0      0
S1   mertest1.ppp  -                Netwrk  In  CONNECTING      0      0
S2   mertest1.ppp  -                Netwrk  In  CONNECTING      0      0
S3   mertest1.ppp  -                Netwrk  In  CONNECTING      0      0
....
S21  mertest1.ppp  -                Netwrk  In  CONNECTING      0      0
S22  mertest1.ppp  -                Netwrk  In  CONNECTING      0      0
S23  mertest1.ppp  -                Netwrk  In  CONNECTING      0      0
S24  mertest1.ppp  -                Netwrk  In  CONNECTING      0      0

And when you connect with a modem this is what is seen

atdt2530202
CONNECT 31200/ARQ/V34/LAPM/V42BIS

You've reached Evansville Online! (oc-nas-03)

login:mertest1.ppp
Password:
PPP session from (216.135.4.22) to 216.135.13.35 beginning....

After the '....' it should begin putting out the PPP characters, but it
just hangs at the '....' indefinitely.

Like I said I'm not sure that anyone will be able to help, but if you can,
I sure would be grateful.

  --Jamie Hill

-------------------------------------------------------

-- 
Mike McCauley                               mikem at open.com.au
Open System Consultants Pty. Ltd            Unix, Perl, Motif, C++, WWW
24 Bateman St Hampton, VIC 3188 Australia   http://www.open.com.au
Phone +61 3 9598-0985                       Fax   +61 3 9598-0955

Radiator: the most portable, flexible and configurable RADIUS server 
anywhere. SQL, proxy, DBM, files, LDAP, NIS+, password, NT, Emerald, 
Platypus, Freeside, TACACS+, PAM, external, Active Directory etc etc 
on Unix, Win95/8, 2000, NT, MacOS 9, MacOS X
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