Had my isp look into this for me and this was their response:
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The only thing that I can see is that there is some sort of redirection issue from your .htaccess. It may be something that can be resolved, but customization of the plug-in and .htaccess files in your account falls outside the scope of WestHost Technical Support.
The Apache error log reports the following when you attempt to visit one of the pages at the home level:
[Sat May 29 19:29:37 2010] [error] [client 66.249.68.130] mod_rewrite: maximum number of internal redirects reached. Assuming configuration error. Use 'RewriteOptions MaxRedirects' to increase the limit if necessary.
This basically indicates the redirection is looping and is unable to complete.
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Anyone have any insights?