Upgrading Drupal

I followed all the steps involved in upgrading but seem to be having a problem with not all tables being updated properly. I get a "Page not found" at my website currently.

Why would it not be updating all the tables correctly?

Is there a method to figuring out which database updates I need to run so I can do it manually? I'm not sure on my current version of Drupal, I believe it's 4.6.5 but a lot of core files have been altered. Is this causing the problems, perhaps?

Any help would be appreciated, thanks.

I just upgraded from 4.6.5 to 4.7RC1. Everthing worked fine for 'authenticated users' but when I log in as user id 1, I only see a '2' as content.

HTML CODE
<!-- begin content -->2<!-- end content -->
HTML CODE

If I request a special node as 'http://mydomain.de/node/13' I can see the correct content, but /node or /admin or even /logout only return this '2' to me...

Any idea?

Is thera a good detailed Upgrade How To?

The instructions scare me to death and appear to require taking my site offline.

I'm trying to go from: Drupal 4.6.4, -> 4.6.5 -> 4.6.6 (as thats advised)

Also where to find the versions, 4.6.5. isn't available on the dowloads page.

first time upgrader...

I have quite old Drupal 4.6. Now I have a dilemma: should I choose drupal 4.7 or 4.66? Is there any possibility that 4.7 will not work propertly? I have very big website based on drupal and it's very important for me to work propertly.

Has the upgrading procedure changed in the latest version of 4.7?

I'm trying to upgrade 4.7b5 to 4.7 RC1, but when I go too www.the-website-I-want-to-upgrade.com/update.php I only see a blank page (as I was not logged in the DB as UID 1 I turned off the access control check within the update.php file). I've upgraded several Drupal-portals before with success, so I know all about the traditional upgrading-procedure.

I'd appreciate any response!

Friends,
I need to upgrade my drupal-4.6.3 to 4.6.6.
My question is:
Should to update from 4.6.3 to 4.6.6 directly or first from 4.6.3 to 4.6.4 and after from 4.6.4 to 4.6.5 and finally from 4.6.5 to last release 4.6.6 ?? What do you advise me??

Thank you very much.

richardv