Post installation

Hello, I am new to Drupal and I'm having trouble figuring out my log in problem. I have a successful install on a local network server. Apache 2.0.46, PHP 4.3.2, MySQL 4.1.10. I am having troubling with session cookies. So far I have discovered:

1. When I first come to the login page, a PHPSESSID cookie is set. This id matches the sid for uid 0 in the sessions table. I see that uid looks like an anonymous user that is created when I create my admin user (uid 1).

2. If I try to log in as admin with the correct password, the watchdog table reports I have successfully logged in, but the PHPSESSID returned after the login event is the same as the sid for the anonymous user. At this point, I have two sid's in the sessions table. One corresponding to uid 1, and one corresponding to uid 0. If I change my local cookie PHPSESSID to match the sid from the sessions table, I am successfully logged in as admin.

3. If I logout, my PHPSESSID cookie remains.

4. When I return to the login page, even with a PHPSESSID cookie that matches an existing sid for uid=1 in the sessions table, I am unable to login. My PHPSESSID cookie is reset with a new 'anonymous' session id when I attempt to log in.

5. When I go to the login page without a cookie, an 'anonymous' PHPSESSID cookie is set. If I delete this cookie and then attempt to login, I am always successful. The same if the existing cookie corresponds to an session for uid=1.

I use drupal for 3 weeks, it was very stable. But suddenly only a blank page whatever node I try to reach:

www.celebrites-selection.com/mon_blog/

thanks for help

I was looking for a good, fixed-width theme that works across IE, Safari and Firefox. I was struck with how amazingly incompatible they all seem to be (visit: http://themes.drupal.org). Only Kubrick was close, so I installed it. It's fine, but there is a problem on IE - the footer background image is off to the left by 2 pixels (see: http://themes.drupal.org/themeswitcher?theme=kubrick).

There doesn't seem to be anything wrong with the css:

I want to create a site that allows users to add there city, if its not already there. Then they can add there school it its not already there. Then I would like them to be able to post information that is going on at there school. I thought a forum would be a good way to do this, but I'm not sure how. I'm open to any suggestions or ideas. Thanks!

Don't want users to change their usernames.

How can this be done?

Thanks!
ZoneV

Can anyone help, please.

I frequently get the following error message when I save some new input:

user error: Access denied for user: 'xxxxx@localhost' to database 'drupal'
query: LOCK TABLES sequences WRITE in /home/public_html/drupal/includes/database.mysql.inc on line 66.
warning: Cannot modify header information - headers already sent by (output started at /home/public_html/drupal/includes/common.inc:384) in /home/public_html/drupal/includes/common.inc on line 192.