I'm experiencing the same hard freeze with kernel 2.6.24-16. No wireless
here, just onboard ethernet. The same system worked just fine under
Gutsy, the problem's only started since upgrading to Hardy. My graphics
card is an old S3 Virge. Crashes usually appear when watching Youtube in
Firefox, but also have occured when watching videos from a locally
attached USB drive. System appears stable under light load though - I
stupidly uninstalled the Gutsy kernel not long after the upgrade, before
I became aware of this problem, so I haven't been able to test the
system with the old kernel. The computer is totally unresponsive, the
pointer doesn't move etc, and appears offline from when scanned by other
computers on the network.

The weirdest thing (to me at least) is that after the computer has been
power cycled (the only way to get it to respond again) the BIOS sequence
hangs. The hard drive light goes on and stays on, but the BIOS doesn't
go on to detect the hard drives. The only way to get round this appears
to be to hold down the power button for five seconds until the machine
shuts down, then leave it for 10 minutes or so, and then turn it back
on. After this it appears to behave normally, until the next freeze.

There's a post on the forums that appears to be describing the same problem: 
http://ubuntuforums.org/showthread.php?t=725669
As suggested on there I tried booting with 'noapic nolapic irqpoll noirqdebug', 
but this didn't help. I don't have a great deal of time to troubleshoot, but 
would like to help in sorting this out if there's any other information I can 
provide.

** Attachment added: "version.log"
   http://launchpadlibrarian.net/13590141/version.log

-- 
Linux kernel 2.6.24-12 lockup
https://bugs.launchpad.net/bugs/204996
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