PHP 4.1.1, c-client-2001a and cyrus-imapd

Hi, I've asked this question in php.general. But it seems none knows why it's happens. May be in this list I'll find help... we're using PHP4.1.1 as apache module compiled with c-client-2001a. So when I try to open imap mailbox server (cyrus-imapd v 2.0.16) says: Feb 19 19:00:18 hermes imapd[10412]: badlogin: test.test.net[x.x.x.x] CRAM-MD5 authentication failure [no secret in database] We have to use plaintext authentication. Is there a way to say php/c-client to use plaintext authentication??? At the same time when I use php4.0.4pl1 with cclient-2001a it works fine. Is it problem of PHP4.1.1? Should we downgrade to PHP4.0 and c-client-2000a? Thanks in advance, Pavel.