I'm running wpmu 3.0; new install last week, using subdomains. I'm unable to get into the backend/dashboard of any of the sites except the main/original one. I get stuck in an endless login loop (where I put in the correct login and password, and get redirected to the same login page again)
Wildcard DNS is enabled correctly, as is mod_rewrite. Here is the .htaccess file in it's entirety:
RewriteEngine On
RewriteBase /schoolhouse/
#uploaded files
RewriteRule ^(.*/)?files/$ index.php [L]
RewriteCond %{REQUEST_URI} !.*wp-content/plugins.*
RewriteRule ^(.*/)?files/(.*) wp-content/ms-files.php?file=$2 [L]
# add a trailing slash to /wp-admin
RewriteCond %{REQUEST_URI} ^.*/wp-admin$
RewriteRule ^(.+)$ $1/ [R=301,L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule . - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-.*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]
<IfModule mod_security.c>
<Files async-upload.php>
SecFilterEngine Off
SecFilterScanPOST Off
</Files>
</IfModule>
Any suggestions on how to fix this?