Why did you (again) reinstall your e-smith box? Install
all the files listed in the instructions (see
http://linux.made-to-order.net/article.php&mode=nested&order=0). This includes all the MySQL files, Apache 1.3.12, php, php-imap, php-mysql, optionally php-ldap, and e-smith-php4-0.2. Then install horde, horde-mysql, and imp.
In this case, I'd suggest you remove everything you've installed, and then install as above. The reason for this is that I've made some changes from the PHP 4.0.1 RPMs to the PHP 4.0.3 ones, and there may be incompatabilities between the way they do things. I'm sorry for the inconvenience, but this will make them easier to update in the future.
I suppose you don't
need to upgrade, but there are security-related fixes, as well as other bug fixes, included in the new versions, so it's strongly recommended.