iPrint authentication failure

Hi!
Well, OES2 on SLES10 and today "discovered", that iPrint does not work. As we have another server(s) it come to my attention just right now. In log I see ...
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[Fri Dec 14 13:41:20 2012] [warn] [client 10.0.0.136] [26229] authnz_ldapdn authenticate: user CN=Alar,O=MTK authentication failed; URI /ipps/HP_LaserJet_P2055_CD1A_i5 [ldap_simple_bind_s() to check user credentials failed][Server is unwilling to perform]
[Fri Dec 14 13:41:20 2012] [warn] [client 10.0.0.136] [26229] authnz_ldapdn authenticate: user CN=Alar,O=MTK authentication failed; URI /ipps/HP_LaserJet_P2055_CD1A_i5 [User not found][No such object]
[Fri Dec 14 13:41:20 2012] [error] [client 10.0.0.136] user CN=Alar,O=MTK not found: /ipps/HP_LaserJet_P2055_CD1A_i5
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Printer is there and user is there and ... I can print using another server. On same server is iFolder and does work ok.
Any ideas?
More thanks, Alar.