Merlin2 froze twice around the noon hour today. Indications are that it is a hardware issue that shows up under load, but so far no part of the hardware appears to be malfunctioning, and no pertinent events have been logged. This issue will be resolved by the replacement of the Merlin2 hardware in mid-February.
In the meantime, everyone has been advised to copy documents to workstations while they are being worked on, to minimize the chance of data loss.