Is my SPARCstation 20/71 dying?

I just got these two sets of messages, and I've never seen them before, ever:

Dec  6 16:45:54 isolar /netbsd: NMI: system interrupts: 10000000<VME=0,SBUS=0,M>
Dec  6 16:45:54 isolar /netbsd: memory error:
Dec  6 16:45:54 isolar /netbsd:         EFSR: 9d01<CE,DW=0,SYNDROME=9d>
Dec  6 16:45:54 isolar /netbsd:         MBus transaction: 8fffcd50<VAH=0,TYPE=5,
SIZE=5,C,VA=ff,S,MID=8>
Dec  6 16:45:54 isolar /netbsd:         address: 0x06ab6c58

Dec  6 18:30:18 isolar /netbsd: NMI: system interrupts: 10000000<VME=0,SBUS=0,M>
Dec  6 18:30:18 isolar /netbsd: memory error:
Dec  6 18:30:18 isolar /netbsd:         EFSR: 9d21<CE,DW=2,SYNDROME=9d>
Dec  6 18:30:18 isolar /netbsd:         MBus transaction: 8fffcd50<VAH=0,TYPE=5,
SIZE=5,C,VA=ff,S,MID=8>
Dec  6 18:30:18 isolar /netbsd:         address: 0x06ab4c78

I'm about to leave for San Francisco for the weekend.  Is my memory dying?
I've got 128 Mbytes in it, don't remember if it's 2 64 Mb DIMMs or not.
Should I turn it off and power-cycle it before I leave?

	- Greg