hi
i have linux vps and whm panel

i wanted to install a media site

and then install media plugin ff-mpeg flv and etc

and build easy apache with various versions several times
and change php.ini values

now i have some errors in web sites on my vps acount

for example:

1-i install a joomla cms on a acount and after change configuration.php-dist to configuration.php display 404 error on site

2- i create a folder and a subdomain for this folder
but when i go from subdomain link show 404 error

3- i create custom page on vbulletin before it displayed correctly but now show this error:

Code:
Content Encoding Error (content_encoding_error) 

 
Server response could not be decoded using encoding type returned by server.  
This is typically caused by a Web Site presenting a content encoding header of one type, and then encoding the data differently.  

For assistance, contact your network support team.
and ...

please help me

Tanx a lot