Confusing Intermittent Blank Site

[Guest]

I have a site for a client with osC 2.2 MS2 (051113), contributions installed include the PayPal IPN, PWA and Guestbook for osC v2. The look of the site is heavily customized, you can view it here (it's USUALLY up, smile) http://morningmistmetalarts.com .

 

Every so often - there's no regularity to it - I don't have to have made any changes to the site, but when my client or anyone goes to the site, it will come up blank. Just a white page. No 404 or "page not found" errors. Just blank. If I FTP to the site, the files are all there on the server. Register globlals on, error checking also on, set to 2039.

 

I've had to contact the webhost, they restart Apache, then everything is fine. I checked my configure.php files in both admin and catalog and I noticed ONE difference that might be an issue but I don't know that it's causing this problem. Other than that, I've checked and rechecked my files - everything is where it belongs, code is fine, etc.

 

The difference in the configure.php files relates to the following lines:

 

In catalog\includes\configure.php, line 16, it shows:

 

define('ENABLE_SSL', true); // secure webserver for checkout procedure?

 

(NOTE: the word true is bolded, no quotes around it)

 

Now, in admin\includes\configure.php, line 17, it shows:

 

define('ENABLE_SSL_CATALOG', 'true'); // secure webserver for catalog module

 

(NOTE: the word true is NOT bolded, and has single quotes around it)

 

I did not touch either of these files before. Did I just find a problem here? Would this cause the intermittent issues my client has reported? I verified this was happening when he contacted me, and the webhost also has confirmed seeing the issue. We've just been unable to identify where the problem is, and after checking Apache, PHP, SSL installation, the installation of osCommerce, this is the only thing I can come up with.

 

It's frustrating for my client when suddenly, with no warning, his site comes up blank. He's concerned about losing customers because of this happening every so often.

 

Any suggestions would be very welcome.