Had this notice from Rackspace today, just letting you know in case you didn't and in case it affects the Virtualmin Rackspace API.
Notification of Change – API Service Users
Rackspace remains focused on the security and stability of our products. As such, we will be implementing a new token format for Cloud Identity consumers. This new token format will provide customers a better performing Identity API while increasing overall stability.
Action Required
Rackspace customers should not see any impact to their services or use of the services. Rackspace requests that all Cloud customers utilizing Identity API services validate that any custom code, SDKs, etc. are able to accept a value for a token size of up to 250-characters. (Check here for all standard supported SDKs: https://developer.rackspace.com/sdks/. If you are using any of these standard supported SDKs then you will not have any issues with the change to the new token format.
If you have questions or experience any issues, please contact Rackspace Support:
The Rackspace Cloud US Toll Free: 1.800.926.4141 International: +1.210.312.5400 UK: 0800-083-3012