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=epoll and --with-mem-align=4 as build configuration. 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