Can't log in too mail server after upgrade

[kodyxgen]

hello,
i can't log in to mail server after upgradin to last wersion of kloxo-mr. login faild

[MRatWork]

hello,
i can't log in to mail server after upgradin to last wersion of kloxo-mr. login faild

inform here 'sh /script/sysinfo'

[kodyxgen]

Hello,
my sysinfo.
A. Kloxo-MR: 6.5.0.f-2013031808

B. OS: CentOS release 5.9 (Final) i686

C. Apps:
   1. MySQL: mysql-5.0.95-5.el5_9
   2. PHP: php54-5.4.13-1.ius.el5
   3. Httpd: httpd-2.2.23-3.el5
   4. Lighttpd: --uninstalled--
   5. Nginx: --uninstalled--
   6. Qmail: qmail-1.03-1.5.15
      with: dovecot-2.1.15-1.mr.el5
   7. Dns: bind-9.9.2-3.P2.el5

D. Php-type (for Httpd/proxy): php-fpm_event

E. Memory:
                total       used       free     shared    buffers     cached
   Mem:          2048       1075        972          0          0          0
   -/+ buffers/cache:       1075        972
   Swap:            0          0          0

[kodyxgen]

The user name and accounts are in the roundcube db but still can't autentificate on server. Can you please help me?

[MRatWork]

Remove dovecot. At this version, only courier-imap (qmail-toaster build-in) as imap server.