Notes:
Some of the problems should IHMO been solved by changing/adding to the way imapd gets installed.
Others should maybe be documented.
Others are maybe just the fate of those trying to get it to work...
I hope my list is consistent. I'm afraid, that it doesn't cover all possible setups.

- Package selection:
  selecting 'cyrus-imapd" doesn't got me very far. I also had to add some of the
  cyrus-sasl-packages:
  cyrus-sasl-crammd5
  cyrus-sasl
  cyrus-sasl-digestmd5
  maybe others (too)
  and the perl modules for cyradm:
  perl-Authen-SASL-Cyrus-0.12-2
  perl-Cyrus-IMAP-2.2.12-13

- post install actions
  - The entries for "fud" and "lmtp" in /etc/services where missing
  - /usr/share/doc/packages/cyrus-imapd/tools/mkimap needs to be run to create 
    files and directories
  - Now imapd could be started, but imtest failed with  
    "fatal error: can't write proc file"
    The reason where wrong permissions on /var/spool/imap and below
    (Should be owned by cyrus:mail)
    ditto for /var/spool/imap/user and below

- Later on, one needs a IMAP-Password. (documentation issue ?)
  This needs to be set by /usr/sbin/saslpasswd2
  (for at least 'cyrus' (the admin) and all users wanting to log in to imapd.)
  The resulting file /etc/sasldb2 needs to be readable by user "cyrus".

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Now I have a "small" problem left:
imapd can be started by hand, but it isn't started at system boot:
godot:~ # ll /etc/rc.d/rc5.d/*imap*
lrwxrwxrwx  1 root root 8 Oct 25 09:30 /etc/rc.d/rc5.d/K07imapd -> ../cyrus
lrwxrwxrwx  1 root root 8 Oct 25 22:16 /etc/rc.d/rc5.d/S09imapd -> ../cyrus

By hand:
/etc/rc.d/rc5.d/S09imapd start
Starting IMAP/POP3 service (cyrus-imapd)                          done

But not at system boot
No message on console using "splash=verbose", no entries in boot log.
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