Spontaneous reboots after 10.6.7 upgrade triggered by disk activity

[LinerJoe]

My hackintosh has been perfectly stable until installing 10.6.7 (via software update). 10.6.7 seems to work fine, until there is a decent amount of CIFS/HD activity, then it will reboot.

 

I have not been able to completely pinpoint it at this time what is causing it, however it's definitely disk activity. 2 different things will definitely trigger it, although the amount of time in between reboots varies:

 

1) Ripping a blu-ray movie to the hard drive using MakeMKV will cause it to reboot about 2 or 3 minutes into the 40 minute rip.

 

2) Streaming a movie via CIFS to a networked player is causing reboots as well.

 

It doesn't seem to matter if it's reading from an internal SATA disk or via a USB disk. The blu-ray rip was going to an internal disk, and the streaming is from a USB disk.

 

The interesting part is that I wrote 45 GB to the USB disk last night with absolutely no issues. So it appears to only be related to reads.

 

It is not strictly related to CIFS, that's for sure.

 

Any thoughts here? I know there were CIFS updates in 10.6.7, but not sure if there was any other disk related stuff. I have literally never had the box reboot spontaneously before this.

 

Vanilla 10.6 install + [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url], Gigabyte PA55M-UD2, Gigabyte Nvidia GT240, 8 GB Corsair

 

Thanks!

 

joe