Error: Rewrite or internal redirection cycle after some time

[Maxim Dounin]

Hello!

On Wed, Sep 19, 2012 at 07:55:38PM -0400, thiagotognoli wrote:

> Thanks for the reply, but do not know if this is the problem because the
> open_file_cache is not configured at global level, and index.php is not
> changed or replaced, this file was never changed because it is the default
> magento, have any other ideas of what might be?

May be a result of X-Accel-Redirect loop if your backend use it, or 
backend error + fastcgi_intercept_errors + error_page loop (again 
if configured).

If in doubt, you may activate debug log (see 
http://nginx.org/en/docs/debugging_log.html).  From debug log it 
would be clear what exactly goes on.

Maxim Dounin