FreeRadius AND HP PC 2524 as a 802.1x autentificator

[Andrew Bogorodsky]

modcall: entering group Auth-Type for request 2 
rlm_chap: login attempt by "ab" with CHAP password 
rlm_chap: Using clear text password 123 for user ab authentication. 
rlm_chap: Pasword check failed 
modcall[authenticate]: module "chap" returns reject for request 2

mysql> select * from radcheck;
+----+----------+---------------+----+-------+
| id | UserName | Attribute     | op | Value |
+----+----------+---------------+----+-------+
|  2 | ab       | CHAP-Password | := | 123   |
|  1 | ab       | Password      | == | 123   |
+----+----------+---------------+----+-------+
Sorry, but UserName and Password ARE both valid and correct..
What can be wrong and how I can debug this?
By another switch (RubyTech 2024) all works properly without any 
troubles, but on HP PC 2524 as a 802.1x autentificator I got this 
access-reject.

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       Andrew Bogorodsky
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