Internal server errors should all be logged to the apache error log. Use your cpanel interface to take a look at the http log files and see if there is more information there. I've been running GoDaddy drupal sites for a while without trouble. Whereas I there are other providers I prefer, I would not say we've got a clear case of Godaddy problems here.

From: support-bounces@drupal.org [mailto:support-bounces@drupal.org] On Behalf Of Ahmad Fahmy
Sent: Tuesday, May 04, 2010 2:09 PM
To: support@drupal.org
Subject: [support] Forms not working!!

Hello,

All forms on my site produce an "internal server error 500" including the login, search and contact us forms. If I delete and restore the database or upgrade my drupal installation the error is fixed , but only for a short while and then suddenly without doing anything, the error reappears!!!!!!!!!!!

What i noticed is that when the site is working fine, the forms load quickly including the login form loading the stored username and password quickly. But when the error is there, the forms are so slow when loading.

I contacted godaddy , they took a look and said the error is not from their side.

I don't know what keeps bringing this error up and why do any updating to the database and files remove it temporarily. I can't even log to the admin. back end.

Someone suggested increasing the php memory which I did but through inserting lines in the htacess files to no avail. he told me you might need increasing the RAM through your hosting himself!!