Have you checked the fans to make sure they're all functioning?  It 
could be heat related.

Also, were there any power surges or outages or anything that you 
noticed?  A minor component failing from a surge could cause similar 
symptoms.

-- 
Michael Vieths
Email:  Foeclan at Winternet.com
Web:    http://www.geekbear.net


Mike Nielsen wrote:

> Hi there...
> 
> For the last week or two I'm getting about 2-3 days of uptime before
> my machine is just lock.   Sysrq doesn't work, Numlock goes out, etc. etc.
> 
> I have been through all the logs and can't find an oops or a panic of anysort.
> 
> Most of the hardware is under a year old.  I think my floppy drive is used.  
> 
> Dual P3 550   Asus P2b-DS (With the latest bios patches)
>