I use Kaspersky internet security and find it slow upon start-up, though I like the fact it restores my system to full operation when problems occure (believe it took over all restore functions). I have not had an attack since installing the system, and find some browsers like Firefox or Opera are slower since using Kasper than I have experienced in the past. My license will soon expire so I'm searching for new security and asking a site I trust for true unbiosed information.