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Thread: System is gets very slow

  1. #1
    Join Date
    Apr 2009

    System is gets very slow


    My box is connected to a big network and every now and then I feel my system becomes very slow and sometimes non-responsive at all. It takes > 5 min to come back to normal and sometimes I have to restart my system to make it work properly.
    My questions are:
    1- Is this normal in Ubuntu?
    2- How do I know if there are some processes running in the background? I tried htop but I could see nothing abnormal!
    3- How do I know if there is a network scan?
    4- Is there a "quick" way to know if someone is logged into my system without my authorisation?

    Thanks in advance,
    Last edited by d0.higgs; September 24th, 2011 at 10:36 PM. Reason: adding more info

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