I've spent all day trying to get my 4.7 sites that work on windows xp localhost to work on my centos 4.4 (basically redhat enterprise) linux box. They work fine on my windows box but not on linux.
The mysql/php/apache versions are identical or greater on the linux box (5, 5, 2).
On the linux box:
1) I've verified that phpinfo.php works from within my drupal tree so I know php is working (in order to test this I moved phpinfo to the normal index.php)
2) I phpmyadmin dumped the dbs from the windows box and then imported them into my linux mysql setup. I can log into mysql directly with the user/password combos as specified in my site settings.php files. So the db tables seem correct
What sucks is that my X is not running well on the linux box, so i have to bounce back to my windows box on the same network and check my linux sites in the windows browser via "http://192.168.1.99/drupal474"
When I try to bring up any of my sites on the linux box... they all seem to want to resemble a fresh drupal install where you get teh first page asking you to create accounts, etc. The user/password input boxes exist but they never accept any of the user/password combinations i know work for a given site.