Why is 'www.' disappearing?

[Quarterbore]

Funny, I use a rewrite rule to force the www. Some browsers will not retain cookies if they don't come in under the www (I don't recall which, I just no I got tons of complaints).

Add this to your htaccess file in the public html folder.

Options +FollowSymlinks
RewriteEngine on
rewritecond %{http_host} ^your-main-domain\.com [nc]
rewriterule ^(.*)$ http://www.your-main-domain.com/$1 [r=301,nc]

No more issues! But this will force the www on you!