SASL problem

[Илья Анохин]

Hi everyone.
I'm trying to set up mail system using 
postfix+cyrus-imapd+cyrus-sasl+mysql+pam_mysql
When trying to check mailbox using pop3 or imap I get following error:

May 29 01:10:55 relay pop3[849]: badlogin: relay.0f.ru [192.168.127.2] 
plaintext vasya SASL(-13): authentication failure: checkpass failed

I don't get what's happaning. I used this HOWTO 
(http://www.delouw.ch/linux/postfix.phtml).

Besides, I'm getting some errors I can't deal with:

May 29 01:05:34 relay imaplocal[810]: badlogin: localhost.0f.ru 
[127.0.0.1] plaintext cyrus SASL(-13): authentication failure: checkpass 
failed
May 29 01:05:37 relay saslauthd[265]: unable to 
dlopen(/usr/lib/pam_mysql.so)
May 29 01:05:37 relay saslauthd[265]: [dlerror: /usr/lib/pam_mysql.so: 
unsupported file type]
May 29 01:05:37 relay saslauthd[265]: adding faulty module: 
/usr/lib/pam_mysql.so

May 29 01:10:46 relay saslpasswd2: setpass succeeded for vasya
May 29 01:10:46 relay saslpasswd2: error deleting entry from sasldb: 
DB_NOTFOUND: No matching key/data pair found

What does it mean and how is it possoble to fix it?

Software:
FreeBSD 4.9-RELEASE
cyrus-imapd-2.2.4.tar.gz
cyrus-sasl-2.1.18.tar.gz
mysql-4.0.20.tar.gz
openssl-0.9.7d.tar.gz
pam_mysql-0.5.tar.gz
postfix-2.1.1.tar.gz

Thanks, Ilia