System locks up or reboots, keyboard LEDs flash

[Julian Hall <jules@acris.co.uk>]

The subject tells most of the story actually.  My system sometimes 
reboots itself, and sometimes locks up entirely. When it locks up, the 
scroll lock and caps lock LEDs on the keyboard start flashing on and off 
approx once per second.

My system is a Compaq Deskpro with a Pentium processor.  I'm running 
kernel 2.4.20 (home built, but a stock kernel from kernel.org, with no 
patches) over a SuSE 6.4 based system with some software upgrades (too 
numerous to list, but probably nothing relevant).  My primary FSs are 
ext3 & reiser.

I have tried changing motherboard (with integrated gfx card), processor 
and RAM to no avail.  There are a couple of net cards that have remained 
constant, along with the hard disks.

No messages appear to make it into the log, or get as far as the console.

The problem started yesterday morning at about 4am, and after a reboot 
the system lasted about 16 hours, but failures are getting more and more 
frequent, and it seems to only last about 30 mins on average now.  Would 
really appreciate it if anyone can help...

Thanks!
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