Error Report
I've been just living with the problem and doing the hard shutdowns when necessary. At this point I'm almost tempted to never turn the machine off, and just do a restart every once in a while when I know the cpu's are well warmed up and at a good temperature.
My fear is that it's not a temperature based issue, and something else completely that I'm totally missing. Here is the latest error report (from about 5 minutes ago, when I had to do another hard shutdown). I wish I knew what any of it meant.
Interval Since Last Panic Report: 452725 sec
Panics Since Last Report: 13
Anonymous UUID: 0C4D094C-F039-C32F-ADFF-C0092473E35C
Fri Jan 2 10:08:23 2015
Machine-check capabilities 0x0000000000001c09:
family: 6 model: 26 stepping: 5 microcode: 17
Intel(R) Xeon(R) CPU E5520 @ 2.27GHz
9 error-reporting banks
threshold-based error status present
extended corrected memory error handling present
Processor 0: no valid machine-check state
Processor 1: no valid machine-check state
Processor 2: no valid machine-check state
Processor 3: no valid machine-check state
Processor 4: no valid machine-check state
Processor 5: no valid machine-check state
Processor 6: no valid machine-check state
Processor 7: no valid machine-check state
Processor 8: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000800 invalid
IA32_MC1_STATUS(0x405): 0xbe00000000400e0f valid
MCA error code: 0x0e0f
Model specific error code: 0x0040
Other information: 0x00000000
Threshold-based status: Undefined
Status bits:
Processor context corrupt
ADDR register valid
MISC register valid
Error enabled
Uncorrected error
IA32_MC1_ADDR(0x406): 0x000000e1e7e1e000
IA32_MC1_MISC(0x407): 0x0000000001000000
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0000000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0000000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0000000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0000000000000000 invalid
Processor 9: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000800 invalid
IA32_MC1_STATUS(0x405): 0xbe00000000400e0f valid
MCA error code: 0x0e0f
Model specific error code: 0x0040
Other information: 0x00000000
Threshold-based status: Undefined
Status bits:
Processor context corrupt
ADDR register valid
MISC register valid
Error enabled
Uncorrected error
IA32_MC1_ADDR(0x406): 0x000000e1e7e1e000
IA32_MC1_MISC(0x407): 0x0000000001000000
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0000000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0000000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0000000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0000000000000000 invalid
Processor 10: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000800 invalid
IA32_MC1_STATUS(0x405): 0xbe00000000400e0f valid
MCA error code: 0x0e0f
Model specific error code: 0x0040
Other information: 0x00000000
Threshold-based status: Undefined
Status bits:
Processor context corrupt
ADDR register valid
MISC register valid
Error enabled
Uncorrected error
IA32_MC1_ADDR(0x406): 0x000000e1e7e1e000
IA32_MC1_MISC(0x407): 0x0000000001000000
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0000000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0000000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0000000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0000000000000000 invalid
Processor 11: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000800 invalid
IA32_MC1_STATUS(0x405): 0xbe00000000400e0f valid
MCA error code: 0x0e0f
Model specific error code: 0x0040
Other information: 0x00000000
Threshold-based status: Undefined
Status bits:
Processor context corrupt
ADDR register valid
MISC register valid
Error enabled
Uncorrected error
IA32_MC1_ADDR(0x406): 0x000000e1e7e1e000
IA32_MC1_MISC(0x407): 0x0000000001000000
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0000000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0000000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0000000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0000000000000000 invalid
Processor 12: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000800 invalid
IA32_MC1_STATUS(0x405): 0xbe00000000400e0f valid
MCA error code: 0x0e0f
Model specific error code: 0x0040
Other information: 0x00000000
Threshold-based status: Undefined
Status bits:
Processor context corrupt
ADDR register valid
MISC register valid
Error enabled
Uncorrected error
IA32_MC1_ADDR(0x406): 0x000000e1e7e1e000
IA32_MC1_MISC(0x407): 0x0000000001000000
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0000000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0000000000000000 invalid
IA32_MC7_STATUS(0x41d): 0x0000000000000000 invalid
IA32_MC8_STATUS(0x421): 0x0000000000000000 invalid
Processor 13: machine-check status 0x0000000000000004:
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0x0000000000000800 invalid
IA32_MC1_STATUS(0x405): 0xbe00000000400e0f valid
MCA error code: 0x0e0f
Model specific error code: 0x0040
Other information: 0x00000000
Threshold-based status: Undefined
Status bits:
Processor context corrupt
ADDR register valid
MISC register valid
Error enabled
Uncorrected error
IA32_MC1_ADDR(0x406): 0x000000e1e7e1e000
IA32_MC1_MISC(0x407): 0x0000000001000000
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0000000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000000 invalid
IA32_MC5_STATUS(0x415): 0x0000000000000000 invalid
IA32_MC6_STATUS(0x419): 0x0000000000000000 invalid
IA32_
Model: MacPro4,1, BootROM MP41.0081.B07, 8 processors, Quad-Core Intel Xeon, 2.26 GHz, 6 GB, SMC 1.39f5
Graphics: NVIDIA GeForce GT 120, NVIDIA GeForce GT 120, PCIe, 512 MB
Memory Module: DIMM 1, 1 GB, DDR3 ECC, 1066 MHz, 0x80AD, 0x484D54313132553741465238432D47372020
Memory Module: DIMM 2, 1 GB, DDR3 ECC, 1066 MHz, 0x80AD, 0x484D54313132553741465238432D47372020
Memory Module: DIMM 3, 1 GB, DDR3 ECC, 1066 MHz, 0x80AD, 0x484D54313132553741465238432D47372020
Memory Module: DIMM 5, 1 GB, DDR3 ECC, 1066 MHz, 0x80AD, 0x484D54313132553741465238432D47372020
Memory Module: DIMM 6, 1 GB, DDR3 ECC, 1066 MHz, 0x80AD, 0x484D54313132553741465238432D47372020
Memory Module: DIMM 7, 1 GB, DDR3 ECC, 1066 MHz, 0x80AD, 0x484D54313132553741465238432D47372020
Bluetooth: Version 4.1.7f2 12718, 3 service, 13 devices, 3 incoming serial ports
Network Service: Ethernet 1, Ethernet, en0
PCI Card: NVIDIA GeForce GT 120, sppci_displaycontroller, Slot-1
Serial ATA Device: HL-DT-ST DVD-RW GH41N
Serial ATA Device: HL-DT-STDVD-RAM GH60N
Serial ATA Device: WDC WD6400AAKS-41H2B0, 640.14 GB
Serial ATA Device: MAXTOR STM3320620AS, 320.07 GB
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: ST31000528AS, 1 TB
USB Device: hub_device, 0x050d (Belkin Corporation), 0x0237, 0xfa200000 / 2
USB Device: USB2.0-Ser!, 0x1a86, 0x7523, 0xfa230000 / 5
USB Device: USB2.0 MFP(Hi-Speed), 0x04b8 (Seiko Epson Corp.), 0x084c, 0xfa210000 / 4
USB Device: External USB 3.0, 0x0480 (Toshiba America Info. Systems, Inc.), 0xd010, 0xfa240000 / 3
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x5a100000 / 2
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0x5a110000 / 3
USB Device: Kensington Expert Mouse, 0x047d (Kensington), 0x1020, 0x1d100000 / 2
USB Device: USB Receiver, 0x046d (Logitech Inc.), 0xc52b, 0x3d100000 / 2
FireWire Device: built-in_hub, 800mbit_speed