[imp] Problem after Upgrade PHP

[Flavio Borup]

I Have a Brazilian Linux (Conectiva, Version 8)

A webmail machine, with Horde/IMP, MySQL and PHP 4
I've updated PHP 4 using the APT-GET feature and after... the webmail system
shows a problem

Nobody can login with error:

Try this:http://www.arrowfarma.com.br/webmail

Warning: Failed opening 'Crypt/HCEMD5.php' for inclusion
(include_path='.:/home/httpd:/usr/share/php') in
/var/www/default/webmail/horde/lib/Secret.php on line 39

Fatal error: Cannot instantiate non-existent class: crypt_hcemd5 in
/var/www/default/webmail/horde/lib/Secret.php on line 41


php version: http://www.erowlabs.com.br/newsite/teste.php


The updates used:
WebMail - /etc/apt > apt-get install  mod_php4 php4-doc php4-doc-pt_BR
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
  libpng3 php4 php4-imap php4-mysql
The following NEW packages will be installed:
  php4-doc-pt_BR
The following packages will be upgraded
  libpng3 mod_php4 php4 php4-doc php4-imap php4-mysql
6 packages upgraded, 1 newly installed, 0 to remove(replace) and 101 not
upgraded.
Need to get 6141kB of archives. After unpacking 23.4MB will be used.
Do you want to continue? [Y/n] Y
Get:1 ftp://atualizacoes.conectiva.com.br 8/conectiva/updates libpng3
2:1.2.5-1U80_1cl [186kB]
Get:2 ftp://atualizacoes.conectiva.com.br 8/conectiva/updates mod_php4
4:4.3.3-1U80_2cl [848kB]
Get:3 ftp://atualizacoes.conectiva.com.br 8/conectiva/updates php4
4:4.3.3-1U80_2cl [1142kB]
Get:4 ftp://atualizacoes.conectiva.com.br 8/conectiva/updates php4-doc
4:4.3.3-1U80_2cl [1929kB]
38% [4 php4-doc 172032/1929417B 8%]