Good afternoon to everyone I'm new user of the port explorer and need a little help. The last months I'm having problems with my computer. When the system starts, I'm loosing control for 4-5 minutes,and after that everything is fine. I'm sure there is a trojan in my system and that's a hacker's job, because and other users of the LAN where we belong have similar problems. I'm working with NOD32 antivirus and Zone Alarm firewall. My firewall stops many suspicious attempts for connection to my computer and the antivirus,even though finds no virus or trojan, reports me often for a suspicious file -matrix.class-, which I can't find when I search my computer. It was told me about the port explorer and I decided to try it- I'm using the evaluation version. Everything seems to be ok in the sockets menu-there is no suspicious file-only the system's and applications which I use. What should I do? Is it possible the trojan to use stealth technics as the viruses to hind itself? Please help Thanks a lot.