[imp] message viewing of folder INBOX

[shelly]

Hello,
I'm busting my head. Can't understand why imp doesn't show the contents
of the mails in folder INBOX. It's a cyrus instalation. All messages
display corectly except the ones in INBOX. here is my imapd.conf:
<<
configdirectory:        /home/cyrus
partition-default:      /home/cyrus/mailboxes
sievedir:               /home/cyrus/sieve
lmtpsocket:             /home/cyrus/socket/lmtp
srvtab:                 /home/cyrus/srvtab

tls_ca_path:            /etc/ssl/certs
tls_ca_file:            /etc/ssl/cyrus/server.pem
tls_cert_file:          /etc/ssl/cyrus/server.pem
tls_key_file:           /etc/ssl/cyrus/server.pem

# Don't use an everyday user as admin.
admins:                 cyrus
lmtp_admins:            cyrus


quotawarn:              75
sieveusehomedir:        no
allowusermoves:         yes
allowallsubscribe:      yes
loginuseacl:            yes
hashimapspool:          yes
allowanonymouslogin:    yes
allowplaintext:         yes
altnamespace:           yes
allowplainwithouttls:   yes
unixhierarchysep:       yes
virtdomains:            yes
defaultdomain:          localhost
autocreatequota:        32768

sasl_pwcheck_method: auxprop
sasl_passwd_check: sql
sasl_sql_hostnames: localhost
sasl_sql_user: some_user
sasl_sql_passwd: some_pass
sasl_sql_database: some_db
sasl_sql_statement: select password from users_passwd where
username='%u' and realm='%r'
sasl_sql_verbose: yes
>>

and here is my servers.php
<<
$servers['cyrus'] = array(
 'name' => 'Cyrus IMAP Server',
 'server' => 'viaowl',
 'hordeauth' => 'full',
 'protocol' => 'imap/notls',
 'port' => 143,
 'folders' => '',
 'namespace' => '',
 'maildomain' => '',
 'smtphost' => 'viaowl.org',
 'realm' => '',
 'preferred' => '',
 'admin' => array(
     'params' => array(
         'login' => 'some_user',
         'password' => 'some_pass',
         'userhierarchy' => 'user/'
     )
 ),
 'quota' => array(
     'driver' => 'cyrus',
     'params' => array(
         'login' => 'some_user',
         'password' => 'some_pass',
         'userhierarchy' => 'user/'
     )
 ),
 'acl' => array(
     'driver' => 'rfc2086',
 ),
 'dotfiles' => true,
 'hierarchies' => array());
>>

Can anyone give me any kind of clue on this ?