Upgrading Drupal

I just updated my 6.0 to 6.1 and ist not working that well... i am afraid i messed up something!

For example the drupal logos (logo.png) background is not transparent. Where can i get this garland theme from ???

before I started these were the settings:
Drupal 5.7
Configuration file Protected
Cron maintenance tasks Last run 3 weeks 3 days ago
You can run cron manually.
Database schema Up to date
File system Writable (public download method)
MySQL database 4.1.22
PHP 5.2.5
PHP register globals Disabled
Unicode library Standard PHP
Operations on Unicode strings are emulated on a best-effort basis. Install the PHP mbstring extension for improved Unicode support.
Web server Apache/2.2.8 (Unix) mod_ssl/2.2.8 OpenSSL/0.9.8b mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.5

I had a problem since my webserver got hacked and they reinstalled the server. they moved me to a php5 server - I used to be on php4. I upgraded from 5.2->5.7 but they all had the problem. when I tried to create new posts or edit posts on my mac (in firefox & safari), I'd get this error:

Bad Request

Your browser sent a request that this server could not understand.
Apache/2.2.8 (Unix) mod_ssl/2.2.8 OpenSSL/0.9.8b
mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
PHP/5.2.5 Server at ns2.nhgdns.com Port 80

I followed the .htaccess RewriteBase / instructions and specified 12M memory after following some tips from a search here.
so I thought I'd try the upgrade to 6.x. so I downloaded the latest/6.1 file and ran the update.php and now it shows :

After upgrading from 5.7 to 6.1 which worked fine I have the problem that only the admin sess the site as it was = menus and content is shown normally to the admin.

Without login (anonymous), or login of a non admin gives only the screen:

"Welcome to your new Drupal website!"
with the advice to do some modifications as admin, but I already did.

Maybe it is a simple permission issue, but I cannot find it.

Would be great if somebody has an idea about this!

When I try and update my IT Intranet site I get the following error:

An error occurred. http://it.lyndendoor.com/update.php?id=17&op=do

This of coarse does not tell me anything useful. I am running IIS 7 on Windows Server 2008, PHP 5.2.5, and MySQL 5.0.51a. Any help that you could give me would be great.

-Shmee

I am currently running a site on drupal 4.6.x
I was thinking of moving to 6.1
Now, I understand the upgrade path is
4.6-4.7-5.x-6.1 etc., etc.,

But in our case we only want to preserve the content.
Themes/modules/skins blah blah and even comments are not important.
We have various books/topics/blogs etc., and would like the same to be there on the new installation too.
Any good idea on how to do it? Where to start

Is there anything other than the cumbersome upgrade path?

Any tips appreciated.

Watch dog is showing numerous errors preg_match error

"preg_match() expects parameter 2 to be string, array given in bootstrap.inc on line 670."

It seems there are many error reports on this issue. Is there a patch for 5.7 that addresses this issue?