Service Unavailable Error when saving product in WP-eStore

[vincentpolisi]

For some strange reason, when I edit a product in WP-eStore and click “Save”, I am getting redirected to a page that says “Service Unavailable, The Service is Temporarily Unavailable. Please Try Again Later”.

Here’s a screenshot

http://screencast.com/t/jD7fCACjVB

There are no known problems with our server, bandwidth, WordPress install, etc. Everything else is working properly.

Any idea what is causing this?

We are presently running WordPress 3.2 and Thesis 1.8.1

The product is an e-book and we are using a hosted Add To Cart button embedded with the PayPal email code.

Server configuration is Rackspace Cloud Server with Load Balancing/Failover and separate MySQL server. We are running CDN via MaxCDN with W3Total Cache (memcached). I have cleared all caches and there is no change.

[wzp]

http://www.checkupdown.com/status/E503.html

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