My IBM Thinkpad T40 laptop keeps rebooting. It happens especially frequently when I physically move the machine. Sometimes, even a slight movement will trigger a reboot.
However, I have been able to keep the machine up and running for hours at a time, when I've been able to not physically move the laptop.
Is this a common problem? Is it a spyware/adware issue? The laptop is four years old; are its parts just not screwed in as tightly as they used to be anymore? What can I do about it?