http://dovecot.org/releases/2.1/dovecot-2.1.10.tar.gz http://dovecot.org/releases/2.1/dovecot-2.1.10.tar.gz.sig

The director bugfix is pretty important at least when running in two director setups, since it can break the directors until both of them are manually shut down. I'm not entirely sure if the same happens in >2 director setups, but I'd think so (although I do wonder why I haven't seen it happen in them).

BTW. I'm hoping for v2.2.alpha1 release within a week or two and to get it stabilized rather quickly.

+ imap: Implemented THREAD=ORDEREDSUBJECT extension.
+ Added "doveadm exec" command to easily execute commands from
  libexec_dir, e.g. "doveadm exec imap -u user@domain"
+ Added "doveadm copy" command.
+ doveadm copy/move: Added optional user parameter to specify the
  source username. This allows easily copying mails between different
  users.
+ Added namespace { disabled } setting to quickly enable/disable
  namespaces. This is especially useful when its value is returned by
  userdb.
+ Added mailbox_alias plugin. It allows creating mailbox aliases using
  symlinks.
+ imapc storage: Added imapc_max_idle_time setting to force activity
  on connection.
+ fts-solr: Expunging multiple messages is now faster.
- director: In some conditions director may have disconnected from
  another director (without logging about it), thinking it was sending
  invalid data.
- imap: Various fixes to listing mailboxes.
- pop3-migration plugin: Avoid disconnection from POP3 server due
  to idling.
- login processes crashed if there were a lot of local {} or remote {}
  settings blocks.