Google causing Magento Errors

[atticus7]

I have an online shop - run using Magento. I have recently upgraded to version 1.4, and I installed a extension called Lightspeed, a caching module which makes tremendous improvements to Magento's performance.

Unfortunately, a confoguration problem, meant that I had to disable the module, because it was generating errors relating to the session, if you entered the site from any page other than the home page.

The site is now working as expected. I have Magento's error notification set to email - I've not received emails for errors generated by visitors.

However over a 72 hour period, I received a deluge of error emails, which where being caused by Googlebot. It was generating an erro in a file called lightspeed.php

Here is an example:

---

URL: http://www.jacksgardenstore.com/tahiti-vulcano-hammock

IP Address: 66.249.66.186

Time: 2011-06-11 17:02:26 GMT

Error:

Cannot send headers; headers already sent in /home/jack/jacksgardenstore.com/user/jack_1.4/htdocs/lightspeed.php, line 444

---

So several things of note:

1. I deleted lightspeed.php from the server, before any of these error messages began to arrive.

2. lightspeed.php was never exposed in the URL, at anytime. It was referred to in a mod_rewrite rule in .htaccess, which I also commented out.

3. If you clicked on the URL in the error message, it loaded in the browser as expected, with no error messages.

It appears that Google has cached a version of the page which briefly existed whilst Lightspeed was enabled. But I though that Google cached generated HTML. Since when does cache a server-side PHP file ????

I've just used the Fetch as Googlebot facility on Webmaster Tools for the URL in the above error message, and it returns the page as expected. No errors.

I've had to errors at all in the last 48 hours, so I'm hoping it's just sorted itself out. However I'm concerned about any Google related implications.

Any insights would be greatly appreciated.

Thanks

Ben

[Highland]

Google will cache whatever you serve up. So if your page serves up random text, Google will cache random text.

Have you tried to add the file back in with a NOINDEX command?