[tpop3d-discuss]Error - Authentication token is no longer valid

[Kuba]

Helo,

This is only a problem for only 1 user, that is why I am suprised. User 
and pass are 100% valid, ans user can connect by ssh or web mail. 
Somehow this is what I get from topo3d (SSL mode)

$telnet -z ssl xpl.pl 995
Trying 192.168.0.1...
Connected to xpl.pl.
Escape character is '^]'.
+OK <address@hidden>
user XXX
+OK Tell me your password.
pass YYY
-ERR Lies! Try again!

syslog:

May 12 17:44:10 xpl tpop3d[2599]: listeners_post_select: client 
[6]192.168.0.1/xpl.pl: connected to local address 192.168.0.1:995
May 12 17:44:37 xpl tpop3d[2599]: auth_pam_new_user_pass: 
pam_acct_mgmt(XXX): Authentication token is no longer valid; new one 
required.
May 12 17:44:37 xpl tpop3d[2599]: connection_do: client 
`[6]192.168.0.1/xpl.pl': username `XXX': 1 authentication failures

Any ideas why? And how can I fix it?
Changing password doesn't help

Kuba