I just noticed that this old laptop (mobile AMD Athlon XP2400+, 512 megs of RAM) which is having some minor problems running 12.04 LTS, is using a PAE enabled kernel. Could this be the cause of my woes? (will not complete shutdown, I have to switch off the power supply). Is it possible to re-install a non PAE kernel more appropriate for the processor? does it matter any?
Laptop works correctly 95% except for shutdown.
According to this thread:
first answer, there might be a connection.
Thanks for ur help.