visibility of Mailbox-folders

[Dr. Harry Knitter]

Am Dienstag, 19. Januar 2010 schrieb Dan White:
> On 19/01/10 18:00 +0100, Dr. Harry Knitter wrote:
> >Am Montag, 18. Januar 2010 schrieb Dan White:
> >> On 18/01/10 18:49 +0100, Dr. Harry Knitter wrote:
> >> >Am Montag, 18. Januar 2010 schrieb Gabriele Bulfon:
> >> >> Hi, you should check each of the folder's ACLs.
> >> >> You probably lost permissions for these folders.
> >> >> Gabriele.
> >> >
> >> >Thanks for quick reply.
> >> >However, permissions seem not to be the cause.
> >> >cyradm shows: info lrswipcda
> >> >File permissions are 600 cyrus:mail
> >> >Directory permissions are 700 cyrus:mail
> >>
> >> Check subscriptions. Did you move them over? Some clients may only show
> >> folders the user is subscribed to.
> >
> >Already checked.
> >All types of clients tried dont shown these folders.
> 
> You may have already mentioned, but which versions did you move from, and
> to?
> 
> Can you provide a sanitised copy your imapd.conf config, along with your
> cyradm output?
> 
> Do you see any related errors in your syslog when clients connect?
> 

/var/log/mail.log does not show any errors when the parent folders of those 
missing are accessed nor does syslog

<imapd.conf>
configdirectory: /var/lib/cyrus
defaultpartition: default
partition-default: /var/spool/cyrus/mail
partition-news: /var/spool/cyrus/news
newsspool: /var/spool/news           
altnamespace: no
unixhierarchysep: no
lmtp_downcase_rcpt: yes
admins: cyrus
allowanonymouslogin: no
popminpoll: 1
autocreatequota: 0
umask: 077
sieveusehomedir: false
sievedir: /var/spool/sieve
hashimapspool: true
allowplaintext: yes
sasl_mech_list: DIGEST-MD5
loginrealms: mydomain.com
sasl_pwcheck_method: saslauthd auxprop external
sasl_auxprop_plugin: sasldb
sasl_auto_transition: no
tls_cert_file: /etc/ssl/certs/cyrus-imap.pem
tls_key_file: /etc/ssl/private/cyrus-imap.key
tls_ca_file: /etc/ssl/certs/knitter-ca.pem
tls_ca_path: /etc/ssl/certs
tls_session_timeout: 1440
tls_cipher_list: TLSv1+HIGH:!aNULL:@STRENGTH
tls_require_cert: true
lmtpunix: /var/run/cyrus/socket/lmtp
idlemethod: poll
idlesocket: /var/run/cyrus/socket/idle
notifysocket: /var/run/cyrus/socket/notify
syslog_prefix: cyrus
</imapd.conf>

what output of cyradm would be of interest?

Regards

Harry