words of wisdom from a systems engineer

Horde refreshes when logging in

If you find that Horde (with Plesk) keeps refreshing when you attempt to log in, and there are no errors logged on the screen or in Apache’s logs, check the session.auto_start variable in /etc/php.ini.

If session.auto_start is set to 1, set it to 0 and Horde will miraculously start working again.