[imp] Blank page after login

[FiRe-AnGeL]

Hi all,

I am running horde 2.1 (RC3) & imp 3.1 (RC3) apache 1.3.24 (configured for
SSL) + php 4.1.2; mail server qmail+vpopmail under red hat 7.3

checked and re-checked the config/*.php of both horde and imp, and
everything seems to be right!
When I log in; first the login page background style is blank (?) and then
after login, eeeeeverything is blank!!! :)
Can't get it, no errors on apache, nor horde.log... nothing!!! Just a damn
sad blank page!

Anyone has a clue?

Thks in advance,
Daniel Macedo

(just 4 tha record) test.php:
Horde Versions
Horde: 2.1
IMP: 3.1 (run IMP tests)
Turba: 1.1
PHP Version
View phpinfo() screen
PHP Version: 4.1.2
PHP Major Version: 4.1
PHP Minor Version: 2
PHP Version Classification: release
You are running a supported version of PHP.
PHP Module Capabilities
FTP Support: No
Gettext Support: Yes
IMAP Support: No
LDAP Support: No
MCAL Support: No
Mcrypt Support: No
MySQL Support: Yes
PostgreSQL Support: No
XML Support: Yes
Miscellaneous PHP Settings
magic_quotes_runtime set to Off: Yes
PHP Sessions
Session counter: 1
To unregister the session: click here
PEAR
PEAR - Yes
Recent PEAR - Yes
Mail::RFC822 - Yes
Log - Yes
DB - Yes