System Freezing -Again

[Tamouh H.]

> 
> Hi all,
> 
> I have been pestering everyone who will listen on this, and 
> have yet to find a solution ... so here goes again!
> 
> I have a FreeBSD system on a Dell PE 1850 that has been 
> randomly freezing up from time to time in the past two weeks.
> 
> Firewall is enabled, but is very solid as I am using the same 
> rules on several other machines.
> 
> I spent last Saturday and Sunday at the NOC, running Dell 32 
> bit diagnostics on it, along with memtest32, no errors found 
> over many hours of testing.
> 
> NO heat of note from the Power supply CPU or system fan.
> 
> Nothing ever in log files, no core dumps. I have the 
> DUMDEV="AUTO" set in rc.conf, but ran dumpon -v /dev/da0s1b 
> today, the output showed it should be dumping to my swap partition.
> 
> APIC is disabled now, but has been enabled in the past, with 
> the same results. POwer management is shut off in the bios.
> 
> No System Events are being recorded in BIOS, and, the logs 
> were harvested last week with no abnormalitied showing.
> 
> The only item of note, that I found after todays freeze, was in 
> /var/log/maillog, and /var/log/exim/mainlog,   about 15 lines of ^@ 
> recorded at about the exact tine of the freeze. Does anyone 
> think this is significant, or is it simply a symptom of the crash?
> 
> ANY help will be greatly appreciated.
> 
> -GRant 
> 
> 
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> 

Grab yourself an Antec ATX12V Power Supply Tester for $20 and test the power supply.

Tamouh