I have bought a used core i5 3210/ 8GB RAM pc from a friend. But it freezes randomly for like one seconds or less and then continues to work. for example, if I'm typing something in the terminal it takes what I type and then proceed all the commands at once.
Can you help me find out what causes this little freeze?
I have erased the hard-disk and reinstalled a fresh copy of ubuntu so I'm pretty sure it's not a software-related problem.