Blanc screen after login

[pabloferre]

Hi, we been using sugar for two weeks it is great, but today when we try to login we get a blank page, or a "page cannot be displayed" or on Firefox on Mac it open the download window to download the index.php

I been trying to find an error message and I fond this: 408/409!!

"409 =
Too many requests for the same file at one time.
OR
There is a conflict with an established software rule. (ie: you are trying to copy over a file with an older version, or you do not have permissions to delete a file)
OR
This could be caused by a DNS issue."

Also in Safari it display a message like this: The error was: “lost network connection” (NSURLErrorDomain:-1005)

I also have a test sugarCRM in the same server that is working fine.

What can be wrong? why did this happen? is this common in sugar? How can i fix it?
Any help will be appreciated.
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OK solved, I don't know what it was, I sent a ticket to the hosting company and now is working fime, so probably was a server problem, we will never know what was cousing the problem.