FreeBSD Machines dieing, we've tried so much....

[Matt Juszczak]

>I would start by disabling Hyperthreading in the BIOS.  It doesnt
>really have much benefit with the default scheduler (might make some
>things slower), and seems to cause problems.
>
>	---Mike
>  
>

But I have hyperthreading disabled in the sysctl variable for 
hyperthreading (can't remember it off the top of my head, but its 
disabled by default in 5.4 according to UPDATING).......

Am I wrong?