Hi there.
First, forgive me if this is too wordy, but I want to make sure the relevant info is out there... my main problem is written in bold below... the stuff that surrounds it might be clues to solve the problem.
I am exploring the use of Drupal for the website of a Public Broadcasting station that I work for.
I am running it on a new server that we just obtained running RedHat Enterprise Linux version 4. The installations of MySQL and PHP are both the ones that were pre-installed with RedHat.
I was able to install Drupal 4.7.4 without too much trouble... Created a database using instructions from a book that seemed to sorta half-work... And after upping the memory requirement for apache to 32M was able to use the system in what appeared to be working pretty well... But I have my suspicions.
Nevertheless, since it wasn't the main live site that we're using, just a test server (for now), I decided to go ahead and try out 5.0 RC1. I copied over all of the new files into my html directory, adjusted the settings.php with the proper database user and password (pointing it to the server running on localhost). When I went to my admin areas, I got frequent "warnings" having to do with user permissions and databases that weren't created... But generally speaking, the pages would appear and then next time I'd go to the page, the warnings would go away.