I have an old 2006 IBM Lenovo Thinkpad. I had Linux LIte dual booted with Windows XP. When I order a shut down in Lite it turns off and then restarts. It would turn off in WIndows XP. I replaced both systems by Lubuntu and it also turns off and then restarts too. I have to use the power button to shut the machine off. Is there any simple solution to the problem? Do others have the same problem. I had a note when I installed both Linux system that newer updates might not be fully functional.