Login incorrect???

Can anybody tell me, why RADIUS-server return "Login incorrect"?

>SELECT password FROM passwd WHERE user_name='koch' AND active='Y' ;
+----------+
| password |
+----------+
| 371      |
+----------+
(Others tables are empty, I just inserted one test user)

config:
auth {
        max-requests 127;
        request-cleanup-delay 2;
        detail yes;
        strip-names yes;
        checkrad-assume-logged yes;
};

users:
# For detailed description, run:
#       info Radius users

DEFAULT Auth-Type = SQL,
                Simultaneous-Use = 1
        Service-Type = Framed-User,
                Framed-Protocol = PPP

sqlserver (were changed only this string and database host, login-name and pass):
doauth yes

radius.log:
Nov 11 18:09:06 Auth.notice: (Access-Request default 214 "koch" CLID=bla-bla-bla CSID=10): Login incorrect [koch/371]

mysql.log:
041111 18:09:06      51 Connect     radius@localhost on RADIUS
                     51 Query       SELECT attr,value,op FROM attrib WHERE user_name='koch' AND op IS NOT NULL
                     51 Query       SELECT attr,value FROM attrib WHERE user_name='koch' AND op IS NULL
                     51 Query       SELECT password FROM passwd WHERE user_name='koch' AND active='Y'


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