I've built a check list for each time I upgrade Drupal, whether it's a simple (incremental) version upgrade (version 5.4 to 5.7) or a full version upgrade (from version 5 to version 6).

Upgrade

1. Copy the drupal and module files to the web server.

2. Unzip (using tar) the main drupal file.

3. Unzip the modules.

On a recent upgrade of Drupal, I ran into the following error:

/drupal/admin/settings/clean-urls was not found on this server.

It turns out that the directory where Drupal was installed (/home/web/drupal-5.7) was missing it's .htaccess file.  The contents should have been:

#
# Apache/PHP/Drupal settings:
#

On a recent upgrade from Drupal (information at http://www.drupal.org) v4.6.x to v5.1, I discovered that many of my "protected" pages were again publicly accessible.  Since I'd already done the conversion on my production drupal instance, this was of some concern to me, but due to time constraints there was little I could do about it.  Since my time was at a premium, I wasn't able to look at it until Thursday night (July 26th), after doing the conversion the prior weekend.  That's when I discovered tha