Houston; we have a problem

[Network]

Review of the system
OS= FreeBSD-4.2-Stable
PHP= mod_php3-3.0.18 // from the ports collection= mod_php3 -compiled with
imap & mysql support-
IMAP-uw c-Client Version 4.1
Mysql= Client API version 3.23.32
Apache Version Apache/1.3.17
mod_ssl/2.8.0 OpenSSL/0.9.6
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My original issues were sent previously with a topic of "imp-2.2.4 logging
in and ie5.5 "
Briefly I was getting imapd errors on *every* successful login.  In
addition, after successful logins and during attempted logins all users
would get "page can not be displayed".  The folks at imap-uw have confirmed
it is something with the client we are using because the first hit to the
server is *always* successful as shown below.

Feb  8 04:08:15 tower IMP[231]: Login 192.168.0.3 to tower:143 as network
Feb  8 04:08:16 tower imapd[1116]: Login failure
user=host=tower.swahilie.net [192.168.0.5]
Feb  8 04:08:22 tower last message repeated 2 times
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>From this mail-list *Anil* was kind enough to point out what he thinks is a
bug in php4 and advised that I move either to php4-dev -or- php3 --(Mr.
Brent Nordquist)-- backed up *Anil's* suggestion.
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I am now using php3 and horde/imp does *not* work at all presenting me with
the following error;

Fatal error: Call to unsupported or undefined function page_open() in
/usr/local/www/data/horde/imp/index.php3 on line 15
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To save some search time, (below) is the code that the error refers to;

/* Detect that browser */
  $this_client = new WebClient;
  page_open(array('sess' => 'HordeSession'));     <--line 15
  page_close();
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This error page_open(), is shown in the *faq* but doesn't seem to be the
case with us; (below from our httpd.conf:)

<Directory /usr/local/www/data/horde/>
<IfModule mod_php3.c>
        php_value include_path '/usr/local/etc/apache/php'
        php_value auto_prepend_file /usr/local/etc/apache/php/prepend.php3
        php_flag magic_quotes_gpc Off
        php_flag track_vars On
    </IfModule>
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You may assume that our httpd.conf is correct because we had horde/imp
working with php4.
I'd like to think I've done my homework before mailing in.  If not, please
enlighten me.