[Dovecot] Dovecot error: Panic: i_stream_stat()

[PEACEYALL]

Hello!

I'm testing the virtual mail boxes using telnet. The telnet seesion
completes 100% okay with no errors at all.
Though, when postfix has to relay the message to dovecot, i get the
following error in my delivery log (/home/vmail/dovecot-delivery):

deliver(john): 2009-03-21 16:23:00 Panic: i_stream_stat() used for
non-blocking seekable stream
deliver(john): 2009-03-21 16:23:00 Error: Raw backtrace:
/usr/lib/dovecot/deliver [0x80a4c7a] -> /usr/lib/dovecot/deliver [0x80a4ae9]
-> /usr/lib/dovecot/deliver [0x80aa4fc] ->
/usr/lib/dovecot/deliver(mbox_sync_has_changed+0x100) [0x806deb0] ->
/usr/lib/dovecot/deliver(mbox_sync+0x36b) [0x807103b] ->
/usr/lib/dovecot/deliver(mbox_storage_sync_init+0x3e) [0x807160e] ->
/usr/lib/dovecot/deliver [0x805794a] -> /usr/lib/dovecot/deliver(main+0xc97)
[0x8058937] -> /lib/libc.so.6(__libc_start_main+0xe5) [0xb7e13455] ->
/usr/lib/dovecot/deliver [0x8056ef1]
degus:/home/vmail# deliver(john): 2009-03-21 16:23:00 Panic: i_stream_stat()
used for non-blocking seekable stream

Here is the required information:
-------------------------------------------------------
degus:/home/vmail# dovecot --version
1.0.15
degus:/home/vmail#

degus:/home/vmail# dovecot -n
# 1.0.15: /etc/dovecot/dovecot.conf
log_path: /var/log/mail.err
info_log_path: /var/log/mail.log
log_timestamp: %Y-%m-%d %H:%M:%S
protocols: pop3 pop3s imap imaps
login_dir: /var/run/dovecot/login
login_executable(default): /usr/lib/dovecot/imap-login
login_executable(imap): /usr/lib/dovecot/imap-login
login_executable(pop3): /usr/lib/dovecot/pop3-login
mail_privileged_group: mail
mail_location: maildir:/home/vmail/%d/%n/Maildir
mail_executable(default): /usr/lib/dovecot/imap
mail_executable(imap): /usr/lib/dovecot/imap
mail_executable(pop3): /usr/lib/dovecot/pop3
mail_plugin_dir(default): /usr/lib/dovecot/modules/imap
mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap
mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3
pop3_uidl_format(default):
pop3_uidl_format(imap):
pop3_uidl_format(pop3): %08Xu%08Xv
auth default:
  mechanisms: plain login
  passdb:
    driver: sql
    args: /etc/dovecot/dovecot-sql.conf
  userdb:
    driver: passwd
  userdb:
    driver: static
    args: uid=5000 gid=5000 home=/home/vmail/%d/%n allow_all_users=yes
  socket:
    type: listen
    client:
      path: /var/spool/postfix/private/auth
      mode: 432
      user: postfix
      group: postfix
    master:
      path: /var/run/dovecot/auth-master
      mode: 384
      user: vmail
degus:/home/vmail#


degus:/etc/dovecot#  grep -v '^ *\(#.*\)\?$' dovecot-sql.conf
driver = mysql
connect = host=127.0.0.1 dbname=mailserver user=*****88 password=********
default_pass_scheme = PLAIN-MD5
password_query = SELECT email as user, password FROM view_users WHERE
email='%u';
degus:/etc/dovecot#
-------------------------------------------------------

Thank you for your help and time.