Deprecated - Performance and scalability

Hello,

I'm just setting up a Drupal-installation for an intranet, where people can access different applications with a certificate. So I got 2 problems:

1.) Although I've installed and enabled 'webserver_auth.module' and entered the according dates in my Mozilla, Drupal doesn't take my certificate but shows the input fields for a username and a password I want to avoid. Did anyone of you have this problem before and how did you solve it?

First of all I'm sorry about my english, but i've tried to get help on drupal.org.es (in my language) and I've failed.
Second of all, I'm not sure if it's the rigth place to post my problem, if it doesn't I beg you point me to the rigth place.
So here I go.
What the server is:
Dedicated server.
AMD Sempron 2200+, 256 Mb Ram, 80Gb. Windows 2003 Web Edition SP1.
What the server software is:
IIS 6.0 - PHP 5.0.3 as ISAPI module - MySQL 5.0 - Drupal 4.6.5
What it serves:
2 comunities in drupal (not the same code), 1 big and 1 small in diferent AppPools.
The big one, and the drupal wich eats the memory has ~6500 registered users and serves 14000 page-views each day. The database backup is ~72Mb.

Installed modules are:
adsense, attachment, browscap, controlpanel, feedback, filemanager, gsitemap, hof, members, nodevote, sitemenu, syndication, taxonomy_access, taxonomy_dhtml, tinymce, userpoints y xstatistics.

Themes are:
Frienselectric variation and mobile varition.

Active modules where (when the problem start):
adsense, aggregator, archive, attachment, blog, book, browscap, comment, contact, feedback, filemanager, forum, gsitemap, help, hof, locale (7 languajes), members, menu, node, nodevote, page, poll, profile, queue, search, sitemenu, statistics, story, syndication, taxonomy, taxonomy_access, taxonomy_dhtml, throttle (not configured), tinymce, tracker, upload, userpoints y xstatistics

Hi, I'm just curious. Whenever I tried to load someone's else Drupal or ezPublish website, it load instantly slow. It is as if the server isn't responding. I waited about 5-6s, and then the server started sending me the HTML/images. The interesting thing is that clicking on other pages afterwards didn't have the same problem.

My speculation is whether or not Drupal (or any bloated CMS) just warming up...

Anyone else seen this problem before?

i m using 4.6.5 getting
this error while making a new block

plz help me tell me what to do

user error: Duplicate entry '' for key 3
query: INSERT INTO boxes (title, body, info, format) VALUES ('aaaaa', 'aaaaaaa', '', 1) in /home/affy/public_html/includes/database.mysql.inc on line 66.

warning: Cannot modify header information - headers already sent by (output started at /home/affy/public_html/includes/common.inc:384) in /home/affy/public_html/includes/common.inc on line 192.

I have started building my first drupal online web store and overall I am having a successful time. I have looked at a lot ecommerce systems and I am still drawn back to how much you can do with the drupal platform if you have some basic design skills.

I have another site on GoDaddy hosting and it's not as slow as the Drupal site I have. So I'm trying to determine if it's the hosting company or the content/database?

If it's GoDaddy (I'm guessing it is), what hosting companies are particularly good and still inexpensive?

Thanks.