[horde] Horde 4.0-BETA1: Error messages: "EMERG: HORDE Horde_Imap_Client requires a username and password. [pid 1400 on line 137 of "/usr/share/php/Horde/Imap/Client/Base.php"

[gimili]

Horde 4.0-BETA1 seems to be working very well for me but when I ssh to 
my server this message is flying across the screen and not letting me do 
a darn thing.

   ``Message from syslogd at test_server at Mar 18 15:57:10 ...
    HORDE: HORDE [horde] Horde_Imap_Client requires a user name and 
password. [pid 1396 on line 137 of 
"/use/share/php/Horde/Imap/Client/Base.php"]

So I set my logging in the horde configuration to go to a file instead 
of syslog and changed it from "Info" to "Warning" and now my file is 
filling up with:

   "2011-03-18T16:52:38-04:00 EMERG: HORDE [horde] Horde_Imap_Client 
requires a user name and password. [pid 1403 on line 137 of 
"/use/share/php/Horde/Imap/Client/Base.php"]
   2011-03-18T16:52:38-04:00 EMERG: HORDE [horde] Horde_Imap_Client 
requires a user name and password. [pid 1400 on line 137 of 
"/use/share/php/Horde/Imap/Client/Base.php"]
   2011-03-18T16:52:38-04:00 EMERG: HORDE [horde] Horde_Imap_Client 
requires a user name and password. [pid 1400 on line 137 of 
"/use/share/php/Horde/Imap/Client/Base.php"]"

My backends.php:
$servers['imap'] = array(
     // ENABLED by default
     'disabled' => false,
     'name' => 'IMAP Server',
     'hostspec' => '192.168.10.16',
     'hordeauth' => true,
     'protocol' => 'imap',
     'port' => 144,
     // Plaintext logins are disabled by default on IMAP servers (see 
RFC 3501
     // [6.2.3])
     'secure' => 'false',
     'maildomain' => '',
     'smtphost' => '192.168.10.16',
     'smtpport' => 25,
     'cache' => false,
);

OS:  Debian 6 squeeze

Line 137 of /use/share/php/Horde/Imap/Client/Base.php is:

public function __construct(array $paras = array())
     {
         if (!isset($paras['user name']) || !isset($paras['password'])) {
             throw new Invalidation('Horde_Imap_Client requires a user 
name and password.');
         }

Any ideas of what I doing wrong?  Any advice/help is appreciated.
-- 

gimili