Hello,

Our monitoring systems detected significant swapping on your Cloud Server.

The server was experiencing out of memory errors and using the swap space for a significant period of time, as this escalated to a point that it was affecting other customers in that host we were forced to perform a hard reboot on your server instance.

We recommend that you please evaluate the current services on your server and that you are within the resource limits. If necessary you may need to resize your server to a larger memory instance in order to meet your services' resource needs.

The following articles can assist you with troubleshooting resource issues.
http://www.rackspace.com/knowledge_center/article/system-monitoring-with-top
http://www.rackspace.com/knowledge_center/article/memory-management-with-free
http://www.rackspace.com/knowledge_center/article/managing-your-server-6-resizing-your-server-0

If the issue continues to persist, further actions maybe taken by us to prevent future incidents.

Once again, thank you very much for you communication and understanding in this matter. If you have any additional questions or further inquiries, please let us know. We appreciate you and your business. Have a wonderful day!

Regards,
Rackspace Cloud