I tried Squat indexing on my very small home system and when I did a body search in Thunderbird, I got a TON, and I mean TON, of these messages in my log file:

Mar 6 06:13:31 apple dovecot: child 14142 (imap) killed with signal 6 Mar 6 06:13:31 apple dovecot: IMAP(jeff): file file-lock.c: line 112: unreached Mar 6 06:13:31 apple dovecot: IMAP(jeff): Raw backtrace: imap [0x482771] -> imap [0x482166] -> imap [0x484d86] -> imap(file_wait_lock+0x35) [0x484ef5] -> /usr/local/lib/dovecot/imap/lib21_fts_squat_plugin.so [0x2b4664a69a0c] -> /usr/local/lib/dovecot/imap/lib21_fts_squat_plugin.so [0x2b4664a6a99b] -> /usr/local/lib/dovecot/imap/lib21_fts_squat_plugin.so(squat_trie_get_last_uid+0x4c) [0x2b4664a6ac1c] -> /usr/local/lib/dovecot/imap/lib20_fts_plugin.so [0x2b4664862d0b] -> /usr/local/lib/dovecot/imap/lib20_fts_plugin.so [0x2b4664863bb3] -> imap(cmd_search+0xd9) [0x41b909] -> imap(cmd_uid+0x52) [0x41ca12] -> imap [0x41d348] -> imap [0x41d3e9] -> imap [0x41db5f] -> imap(client_input+0x5f) [0x41dd8f] -> imap(io_loop_handler_run+0xf8) [0x4894c8] -> imap(io_loop_run+0x1d) [0x4887ad] -> imap(main+0x3c2) [0x424f52] -> /lib/libc.so.6(__libc_start_main+0xf4) [0x2b466451e1c4] -> imap [0x417df9]

This is with version 1.1rc1. Here is a copy of my dovecot -n:

# 1.1.rc1: /usr/local/etc/dovecot.conf base_dir: /var/run/dovecot/ log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap imaps pop3 pop3s ssl_cert_file: /etc/ssl/certs/stikman-godaddy.crt ssl_key_file: /etc/ssl/private/stikman-godaddy.key disable_plaintext_auth: no login_dir: /var/run/dovecot//login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login verbose_proctitle: yes mail_extra_groups: mail mail_location: maildir:~/Maildir dotlock_use_excl: no fsync_disable: yes lock_method: dotlock maildir_copy_with_hardlinks: no mail_executable(default): /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_plugins(default): fts fts_squat mail_plugins(imap): fts fts_squat mail_plugins(pop3): mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 auth default: mechanisms: plain login passdb: driver: pam userdb: driver: passwd plugin: fts: squat