It takes a lot of time for unpacking packages (about 10 sec to 20 sec even for small packages), even after a new installation. I am using a Lenovo Ideapad 330.
I don't know whether it's a hardware problem or a software one.
My Ubuntu specs:
Half of the hard disk is empty.
Downloading is done in 15 mins but it takes about 3 to 4 hours for a system update. How can I check what is causing the problem?.