info.php something missing (REMOTE_USER)

I have a problem with login fields. Whenever I get to my horde/imp login screen php dumps into the username field, <USE_SESSION_ID> I cannot seem to find an answer as how to prevent this. I am using, OS X 10.3 Apache 1.3.28 Horde 2.2.4 IMP 3.2.2 PHP 4.3.3 (with imap2002e) Here is the config line I have to configure php, ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var --mandir=/usr/share/man --with-apxs=/usr/sbin/apxs --with-zlib=/usr --enable-ftp --with-mcrypt=/sw --with-xml --with-gettext=/sw --with-imap=/usr/lib --with-imap-ssl=/sw/lib --with-mysql --with-mysql-sock=/tmp/mysql.sock I have to adjust the dns.c file for bind 8 compat. It compiled ok, everything works except for this problem that Im having. I noticed that the REMOTE_USER is set to this value <USE_SESSION_ID>. This is located in my Environment bit of the info.php. But on my home machine which is set up the same, I don't have a large Environment part. I still have no idea how to solve this. It has made it's mind up that I am called '<USE_SESSION_ID>'. I have tried to recompile php but to no avail. is there a configuration in php.ini that I can set? Thanks again for listening. Ian