FreeRadius not stable on my server

[Nataniel Klug]

    Hello all,

    I am using FreeRadius to authenticate my PPPoE clients. This is the 
version I am using:

[root at ns2 radius]# radiusd -v
radiusd: FreeRADIUS Version 1.1.0, for host , built on Feb 20 2006 at 
08:14:50
Copyright (C) 2000-2003 The FreeRADIUS server project.

    My system uses the /etc/passwd and /etc/shadow to look for a login 
and them let that client connect to the PPPoE concentrator. I have 4 
PPPoE concetrators and I am having a problem: sometimes my freeradius 
get a little crazy and close some connections and other times it just 
says that the client is still connected and block the client to use 
(becouse of max login set to 1) like in this two situatios:

=== NO LOGIN RECORD ===
Fri Oct 27 08:45:37 2006 : Auth: Login OK: [pauloperez] (from client ns3 
port 2846 cli 00:4F:62:02:96:00)
Fri Oct 27 08:47:09 2006 : Error: rlm_radutmp: Logout for NAS ns3 port 
2827, but no Login record
Fri Oct 27 08:47:23 2006 : Auth: Login OK: [maquiagro] (from client ns3 
port 2847 cli 00:4F:62:09:E8:BB)

Fri Oct 27 08:52:13 2006 : Auth: Login OK: [joilce] (from client ema 
port 14413 cli 00:4F:62:04:D9:5D)
Fri Oct 27 08:52:15 2006 : Error: rlm_radutmp: Logout for NAS ns3 port 
2698, but no Login record
Fri Oct 27 08:52:29 2006 : Auth: Login OK: [paulogava] (from client ns3 
port 2860 cli 00:4F:62:09:E7:8F)


=== MAX LOGIN===
Fri Oct 27 08:09:00 2006 : Auth: Multiple logins (max 1) : [carine] 
(from client ns3 port 2769 cli 00:06:F4:0A:D6:76)
Fri Oct 27 08:09:06 2006 : Auth: rlm_unix: [carine]: invalid password
Fri Oct 27 08:09:06 2006 : Auth: Login incorrect: [carine/] (from client 
ns3 port 2770 cli 00:06:F4:0A:D6:76)
Fri Oct 27 08:09:19 2006 : Auth: rlm_unix: [carine]: invalid password


    What can I do to make my radius system more stable? Migrate it to a 
MySQL solution? I have about 200 login records in most usage time and a 
average of 80 all day.

Att,

Nataniel Klug .'.