Upgrading Drupal

Has the patch for the block error been applied to this upgrade?

I was wondering if the settings.php file ever changes during upgrades, i rather like just copying over the sites folder from previous versions, quick and painless.

Hello Drupal Developers I am with heavy heart want to tell you all people that I have lost client after upgrading his site from 5.2 to 5.8.
I have done all the things which have been written in the Update.txt in drupal 5.8 module and after that I have tested the site on development and after taking permission from the client I have upgraded the live site to the 5.8 version, at that time it was working well but after some hours the site went down saying that

"MySQL: Too many connections"

Hi,

I am in the process of coding a module. I have seen that some modules alter base tables in drupal. I would like to know if I for example add a column to the users table, if I were to upgrade drupal, would this then reset the base tables to defaults?

reson I ask, I have groups that different users connect to, I need to add a column in the users table that will have an id of the group that this user belongs to.

Will the columns stay?

Thianks in advance,
Davin

I had a clean installation of Drupal 6.2 and I saw the Permissions page executing a jQuery to correct the table when roles where too much for the browser's width.
Now I have a clean installation of Drupal 6.3, same browsers (IE6-SP2 Windows, FireFox2.0.0.3 Windows & FireFox2.0.014 Linux) but the Permissions page doesn't execute any correction when the table is too wide.
am I missing something?

I'm testing both Drupal 5.8 and 6.3, both clean installation, no extra modules.
Is Drupal 6.3 so slow??
I think it has to be some wrong configuration on PHP, right?
Drupal 5.8 is performing very fast
Drupal 6.3 is performing really slow!
Comments?