If it's hardware problem It seems to be a AMD or Nvidia problem. I have 2 AMD systems, one at work (4800 on Gutsy) which is about one year old and one at home (5000 on Hardy beta) that is about 6 months old. Both have exactly the same problem.

2008/4/5, nokesy <nokesy_9@hotmail.com>:
The problem u are all having is a hardware problem
this botherd me for weeks and after alot of reasearch i found out y my computer kept freezing up
  ( mouse and keyboard stops responding and all progrms freezes and forces to reset )
it something to do woth either:

Realtek sound drives or other Realtek devices
or USB wireless tabs such as belkin ect

as soon as uninstalled and deleted all these programms , my computer
works fine and is running smooth.


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gutsy amd64 freeze crash lockup
https://bugs.launchpad.net/bugs/157777
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