dovecot - Jul 2008 - file ioloop-poll.c: line 105 (io_loop_handle_remove): assertion failed: (index >= 0 && (unsigned int) index < ctx->fds_count)

Hi,

I am using dovcot on a Fritz!Box (Linux fritz 2.6.19.2 #1 Fri Apr 18 
16:00:34 CEST 2008 mips unknown)
And after upgrading from 1.0.9 to 1.0.15 I am getting above assertion,
when I do some action like moving or deleting on the IMAP mail box using 
MailDir on ext2 fs.

I use --with-ioloop=poll  as build configuration. I am getting a 
different assert, when I compile dovecot with --with-ioloop=epoll and 
--with-mem-align=4
For dovecof configuration see below details.

Thanks for your help,
   DHU



# 1.0.15: /usr/local/etc/dovecot.conf
base_dir: /var/run/dovecot/
log_path: /var/log/dovecot.log
listen: *:xx143
ssl_listen: *:xx993
ssl_cert_file: /var/MailRoot/server.cert
ssl_key_file: /var/MailRoot/server.key
ssl_parameters_regenerate: 0
disable_plaintext_auth: no
verbose_ssl: yes
login_dir: /var/run/dovecot/login
login_executable: /usr/local/libexec/dovecot/imap-login
login_process_size: 32
login_processes_count: 2
login_max_connections: 5
mail_location: maildir:/var/MailRoot/domains/%d/%n//Maildir
imap_client_workarounds: outlook-idle delay-newmail netscape-eoh 
tb-extra-mailbox-sep
auth default:
 default_realm: fritz.homeip.net
 user: xmail
 username_format: %Lu
 passdb:
   driver: passwd-file
   args: /var/MailRoot/dovecotusers.tab
 userdb:
   driver: static
   args: uid=504 gid=504 home=/var/MailRoot/domains/%d/%n/Maildir