[Dovecot] error and time out

[Roberto Cipollini]

I can't download my email if the email has one attachment.
It goes in time out. This is the log: (how to verbose more information 
in dovecot.log?)
version: fedora core 4 and dovecot 0.99-14-4
Can anyone tell me if this can be the problem to not able to retrieve 
the email from dovecot?



==> /etc/dovecot.log <==
dovecot-auth: Sep 28 17:37:03 Info: Login process 8 disconnected
dovecot-auth: Sep 28 17:37:03 Info: Login process 8 connected
dovecot-auth: Sep 28 17:37:03 Info: Login process 8 sent handshake: PID 
22677
dovecot: Sep 28 17:37:29 Warning: Killed with signal 15
dovecot-auth: Sep 28 17:37:29 Info: Login process 8 disconnected
dovecot-auth: Sep 28 17:37:29 Info: Login process 12 disconnected