Login Error 500

[Digi]

Hi all,
Getting Error 500 while trying to login.
i think PHP version compatibility is the main problem there,
My server configuration:
Platform Type
Debian

MySQL Version
5.0.45

Perl Version
5.8.8

PHP Version
5.2.12

Path to SendMail
/usr/sbin/sendmail

Path to Perl
/usr/bin/perl

Path to PHP
/usr/local/bin/php

And prestashop required:
- Linux, Unix, or Windows
- Web Server (Apache 1.3 or later, IIS 6 or later)
- PHP 5.0* or later
- MySQL 5** or later
* Some PHP 5 versions are bugged and prevent PrestaShop from working correctly:
- PHP 5.2.1 (authentication is impossible) {I THINK THIS IS MAIN PROBLEM}
- PHP 5.2.6 (authentication is impossible under 64bits servers)
- PHP 5.2.9 (image management/upload broken)
- PHP < 5.2 (invalid date timezone)

So anybody know how to fix it.
Thank you

[tomerg3]

Try to look for the actual error, you'll be able to find it in the cPanel of your host.