Ubuntu 6.06 hanging on IBM ThinkCentre A30 after non-activity for more than 24 hours

Linux 2.6.x, which Ubuntu 6.06 is based on, hangs on IBM ThinkCentre A30 after non-activity for more than 24 hours.

My scenario is that when I come back to office after the weekend, my linux system takes very long (about 2 minutes) to respond to any keystroke or mouse click.

IBM has a BIOS patch for it:

http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-42952

If you want to know more about the problem, you can read it at:

http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=TCTR-ERRN91

The other solution is to start up the kernel with the “noapic” option.  You can edit the /boot/grub/menu.lst file and add in the “noapic” in the boot command for the kernel lines.