@Greg: The error message indicates that you might have a filesystem error on your computer. Could you please run a filesystem check (availabe in the ubuntu rescue mode) and a momory check (availabe start startup with the ESC key) and check if those report no error?
@Greg: The error message indicates that you might have a filesystem error on your computer. Could you please run a filesystem check (availabe in the ubuntu rescue mode) and a momory check (availabe start startup with the ESC key) and check if those report no error?