[Dovecot] Problem witch dovecot-auth

[Grzegorz Zalewski]

Hello i`m post in this mailing list first time.

I`ve debian Etch witch dovecot version 1.2.alpha3 from:
deb http://xi.rename-it.nl/debian/ experimental-auto main

I`m installing this version dovecot becouse this version solved my problem 
witch imap problem.

It`s working but once or twice times for a day i have error in log:

--------
dovecot: 2008-11-06 22:11:59 Error: auth(default): Raw backtrace: 
dovecot-auth [0x8075761] -> dovecot-auth [0x80757e2] -> dovecot-auth 
[0x8075179] -> dovecot-auth [0x805c478] -> 
dovecot-auth(io_loop_handle_timeouts+0xe9) [0x8078629] -> 
dovecot-auth(io_loop_handler_run+0x82) [0x8078eb2] -> 
dovecot-auth(io_loop_run+0x20) [0x80783d0] -> dovecot-auth(main+0x28c) 
[0x805e07c] -> /lib/i686/cmov/libc.so.6(__libc_start_main+0xe5) 
[0xb7a7b455] -> dovecot-auth [0x8053cd1]dovecot: 2008-11-06 22:11:59 Error: 
child 28945 (auth) killed with signal 6
--------

my dovecot configuration is:

--------
# 1.2.alpha3: /etc/dovecot/dovecot.conf# OS: Linux 2.6.18-6-686 i686 Debian 
4.0log_path: /var/log/dovecot.loglog_timestamp: %Y-%m-%d %H:%M:%Sprotocols: 
imap imaps pop3 pop3sssl_listen(default): my_ip:993ssl_listen(imap): 
my_ip:993ssl_listen(pop3): my_ip:995ssl_cert_file: 
/etc/dovecot/ssl/dovecot.pemssl_key_file: 
/etc/dovecot/ssl/dovecot.pemverbose_ssl: yeslogin_dir: 
/var/run/dovecot/loginlogin_executable(default): 
/usr/lib/dovecot/imap-loginlogin_executable(imap): 
/usr/lib/dovecot/imap-loginlogin_executable(pop3): 
/usr/lib/dovecot/pop3-loginlogin_greeting: POP readyverbose_proctitle: 
yesmail_access_groups: postfixmail_location: 
maildir:~/Maildirmail_executable(default): 
/usr/lib/dovecot/imapmail_executable(imap): 
/usr/lib/dovecot/imapmail_executable(pop3): 
/usr/lib/dovecot/pop3mail_plugin_dir(default): 
/usr/lib/dovecot/modules/imapmail_plugin_dir(imap): 
/usr/lib/dovecot/modules/imapmail_plugin_dir(pop3): 
/usr/lib/dovecot/modules/pop3imap_client_workarounds: 
outlook-idlepop3_client_workarounds: outlook-no-nulsauth default:  verbose: 
yes  debug: yes  passdb:    driver: pam  userdb:    driver: passwd
--------
 Have anyone any idea what is wrong ??