The rule "DBSS - Disk Percentage Used" throws an alarm and the message of the alarm is:
"Disk HarddiskVolumes\\MyHost\\Volume1 is 100% full."
But it suppose to be:
"Disk D is 100% full"
Please restart the Foglight Management Server, the Foglight Agent Manager and the related database agent.
The internal object structure seems to be disordered which can be solved be restarting the components.
If this won't help, please contact Quest Support.