I did everything imaginable ....
Reset NVRAM
Reset SMC
Re-installed Mountain Lion 10.8.2 (Twice!!)
Ran hardware diags myself and took it to Apple who could find nothing.
Opened it up and reseated RAM and checked all connectors...
Finally, I saw post on here about SDRAM drive, which I have installed ...
System Config:
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.53 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 6 MB
Memory: 8 GB
Bus Speed: 1.07 GHz
Mac OSX 10.7.4
SDRAM 4-CT512M4SSD2
Capacity: 512.11 GB (512,110,190,592 bytes)
Model: M4-CT512M4SSD2
NVIDIA GeForce 9600M GT:
Chipset Model: NVIDIA GeForce 9600M GT
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0647
Revision ID: 0x00a1
ROM Revision: 3437
gMux Version: 1.7.3
Displays:
LED Cinema Display:
Resolution: 2560 x 1440
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: 2A0433LR6JL
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Connection Type: DisplayPort
Note that it was version 1 of the firmware which was running on my current config that was freezing ...
I went to the Cruscial site and found an update to version 10G !!!
I burned a CDROM with their ISO image and booted it, installing the firmware update. It now reads ..
M4-CT512M4SSD2:
Capacity: 512.11 GB (512,110,190,592 bytes)
Model: M4-CT512M4SSD2
Revision: 010G
I rebooted to my Mountain Lion 10.8.2 desktop and I'm typing this post waiting for my next freeze up, or perhaps I've finally solved the issue... I really don't know at this point ...
Hope this helps someone...
Regards,
Doug
Edit: Found a statment from Crucial that suggested their firmware update solved the following problem (sound familiar?):
"Corrected a condition where an incorrect response to a SMART counter will cause the m4 drive to become unresponsive after 5184 hours of Power-on time. The drive will recover after a power cycle, however, this failure will repeat once per hour after reaching this point. The condition will allow the end user to successfully update firmware, and poses no risk to user or system data stored on the drive."