authentication failing with imp and horde

[Scott Douglass]

Can anyone explain why I can't login to my imap server using horde/imp? 
I can login just fine with all other IMAP clients (Netscape 
Communicator, Cyrusoft Mulberry, MS Outlook, Netscape Web Mail -perl cgi 
based-) I've tried.

Versions:
Horde: 1.3.5-cvs
IMP: 2.3.7-cvs
PHP: 4.0.6

Cyrus IMAPD: 2.0.12
Cyrus SASL: 1.5.24
OpenSSL 0.9.6a
Apache+mod_ssl 1.3.14

[everything is running on the same host]

My imapd reports:
Jul  9 04:01:01 foo imapd[3616]: badlogin: localhost[127.0.0.1] CRAM-MD5 
authentication failure [no secret in database]

Everytime I try to login via the imp login.php page.

When I login with Cyrusoft Mulberry set to use CRAM-MD5 it works:

Jul  9 11:27:37 foo imapd[5656]: starttls: TLSv1 with cipher 
DES-CBC3-SHA (168/168 bits) no authentication
Jul  9 11:27:37 foo imapd[5656]: login: [xx.xx.xx.xx] scott CRAM-MD5+TLS 
User logged in

With older versions of IMP logins did not attempt to use CRAM-MD5 (or 
other available SASL plugins) but always used plain text. Which was fine 
for me since everything is running on the same host and my client's are 
connecting over SSL.

Scott