admin area is adding WWW to url

[newuser]

Hey, I have pligg installed on a subdomain like http://ashtest1.pligg.com

This seems to work fine until I enter admin which then adds http://www.ashtest1.pligg.com

This is a problem because it clears cookies and creates a JS error with the XMLhttp requests. Any reason only the admin adds the WWW and how I get rid of it? Thanks guys.

[kbeeveer46]

Find and edit this section in your .htaccess file

## Remove these two lines if you have a sub-domain like  http://ashdigg.pligg.com  or http://localhost
## Keep if your site it like   http://www.pligg.com
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^\/?(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]
##### Re-directing End #####

[newuser]

Thanks so much!