WordPress MU

All the sublinks are showing error 404

http://blog.megablogs.org/ if you click on any link on top podcasting, about us or blog all shows error 404

Can anyone suggest.
Thanks

http://trac.mu.wordpress.org/wiki/DebuggingWpmu

Can you confim that you made the DNS and Apache changes when you installed tHE software?

Does the .htaccess file exist and is populated?

.htaccess

RewriteEngine On
RewriteBase BASE/

# Rewrite http://www.megablogs.org to megablogs.org
RewriteCond %{HTTP_HOST} ^www\.(.*)
RewriteRule ^(.*) http://%1/$1 [R,L]

#uploaded files
RewriteRule ^(.*)?/?files/(.*) wp-content/blogs.php?file=$2 [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]

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I have done server aliase *.megablogs.org
---------------------------------------

Thanks

Well something went wrong with the install because RewriteBase should be:

RewriteBase /

It changes that on the install.

Please double check my post as you missed the page I linked to with questions and stuff that you can check. (ie check the error logs at the very least.)

I tried registering one more blog and server aliase is working fine. Registration email is coming, registration is working fine just except the links for eg http://megablogs.org also have same issue with top links

Thanks