Drupal 6.x

I get this error message,

Failed to connect to your MySQL database server. MySQL reports the following message: Client does not support authentication protocol requested by server; consider upgrading MySQL client.

What should/do I need to do?

Thanks in advance

i plan on deploying a multi-host solution. my goals are

1) single point of administration - "super admin" for support
2) support for many customers (scale to thousands if marketing works as planned ;)
3) each customer may have one or more websites
4) a customer with multiple sites may have a different design/content for each (for example a hospitality company may have many restaurants all with different branding)
5) each site may have a unique domain
6) each site may have separate users even if owned by same company

This is a kind of suggestion.

I wanted to create a special back-end. For that I found http://api.drupal.org/api/file/developer/examples/node_example.module/6 which seemed to correspond but the explanation missed a critical element: where to put the functions/hooks. After reading the http://drupal.org/node/82920 (creating module for Drupal 5) and other stuff I understood it should be in '/sites/all/modules/node_example/node_example.module', along with a node_example.info file.

Confusing points:
- On the 'node_example' sub-pages it shows "developer/examples/node_example.module" but there's no "developer" folder in my Drupal installation.
- The hooks explanation page ( http://api.drupal.org/api/group/hooks/6 ) doesn't tell where to put the hooks' functions clearly, ...
- ... but it tell that a hook example_hook should be in a file example.module, here the hook name is "node_example_insert" (for 'hook_insert') so I naturally thought that the underscore (_) was another classification separating "node", "example" and "insert"; Just like "example_insert" is hook "insert" for the module "example". Since "node" is also a Drupal key word it became even more confusing.

My advise:
1. In the hooks explanation page redirect the users to the modules creation help page,
2. In the hooks explanation page tell where and in which file to put the hooks functions code.

If I use the Multiple Domain Module feature in Drupal can I push out new modules to all of these domains, sites/portals once they are created?

Thanks

Hello!
In the users details, the user does not come with a photo but with a link "user´s photo" which if clicked leads back to the users page (no photo). However the photo is there in the "files". any ideas?

Could you help me?
many thanks
Nikos

Does Drupal have a module which gives the user the opportunity to view and modify (create and delete would also be nice but not really necessary) an ICS calendar?
I would like to use it to publish birthdays. The birthdays have to be shown by month and the events have to be shown in the month view.

So it will look like this:

December:
4 Lisa (1982)
14 Tim (1960)
29 Kevin (1987)

The ICS file will be viewed with Drupal, but I would like to keep the option open that I can use it with Mozilla Sunbird or my PDA in the future.