When DS logging is enabled in ActiveRoles Server 6.7, and when more than four gigbytes of memory are installed on a 64-bit operating system, the logs will report something similar to the following:
This has been confirmed as a product defect and is being tracked as Bug 515084.
This is a display issue in the logging component, and does not affect the actual memory addressed by the service.
Issue fixed in version 6.8 and higher. The latest version of ActiveRoles Server can be downloaded here