I'm going to risk to report something stupid again and waste resources... but [SERVERBUG] sounds like it should not happen. :)

g create test g OK Create completed. h create test/test2 h OK Create completed. i list "test" "*"

• LIST (\HasChildren) "/" "test"
• LIST (\HasNoChildren) "/" "test/test2" i OK List completed. j delete "test" j NO [SERVERBUG] Internal error occurred. Refer to server log for more information. [2010-07-17 22:57:48]

The log has the following entry: Jul 17 22:57:48 azati dovecot: [ID 583609 mail.error] imap(ski): Error: rmdir(/l/dovecot/ski/dbox/mailboxes/test) failed: File exists

Which is correct $ ls /l/dovecot/ski/dbox/mailboxes/test/ test2

Deleting the mailboxes in sync does work.

k delete "test/test2" k OK Delete completed. l delete "test" l OK Delete completed. m list "test" "*" m OK List completed.

$ dovecot -n # 2.0.rc2: /etc/opt/dovecot/dovecot/dovecot.conf # OS: SunOS 5.10 i86pc zfs first_valid_uid = 100 mail_location = mdbox:/l/dovecot/%u/dbox passdb { driver = pam } protocols = imap service imap-login { inet_listener imap { port = 0 } } service imap { vsz_limit = 1073741824 } ssl = required ssl_cert = </etc/opt/dovecot/dovecot/certs/dovecot.pem ssl_key = </etc/opt/dovecot/dovecot/private/dovecot.pem userdb { driver = passwd } verbose_proctitle = yes protocol imap { imap_client_workarounds = tb-extra-mailbox-sep }