WordPress has a nice feature called “Permalink“. This can improve the visibility or efficiency of your links (http://blog/monthly/post/13 is much nicer then http://blog?p=13).
To achieve this, WordPress generates a .htaccess file to upload in your blog root directory. It processes all HTTP requests via the mod_rewrite module. Problem: all URLs will be processed, even the virtual one such /server-status!
To avoid processing from specific URLs, just add the following line in the generated .htaccess:
RewriteCond %{REQUEST_URI} !=/server-status