Until today it worked fine. But suddenly today I had massive "connection closed by peer" with uTorrent - through different ISPs and with different trackers. Only rebooting helped, but only temporarily. Then again. The next time, after a longer time away from my computer, I see the same, but also my browser is no longer able to connect to anything. I looked at Smart Security - it became damaged: 1. Watch activity - does not show anything 2. Network connections - does not show anything 3. Update - shows 0% 4. when opening advanced setup, I get message "could not read firewall configuration". 5. when attempting to make changes to firewall settings - could not write configuration. I tried to reset Smart Security to default - did not help. The same. After rebooting - again ok (for a while?) After I already started rebooting, I noticed that also PeerBlock was not responding, still, even if PeerBlock somehow hang, Smart Security should not have suffered from that. Not sure which one initiated the problem. Perhaps Smart Security is under attack? Anyway, I don't know what to do, if it repeats yet again. Perhaps to switch off firewall altogether and switch on Windows firewall and see what happens. Is it true that with the same license I bought, I can remove Smart Security and install just Nod32 instead? It may become necessary. One more thought. Maybe, just maybe, the problem was caused by a problematic eSATA controller card. I had issues with it several times before - when writing to a disk on that card, occasionally system hangs, even the mouse won't move. But before the complete hanging, I noticed once or twice both uTorrent and PeerBlock not responding - the only case when I saw PeerBlock not responding before today. Still, I was not writing to the problematic disk this time. And this time there was no complete hanging, just SS blocking everything and not working properly.