i have a E-machines c-1904 with windows xp home and current version of mcafee anti-virus and firewall plus, i am wondering why the firewall goes to full "lockdown" and the ethernet card is "disabled" and this occurs after a detected "hacker attack" can anyone tell me what is going on and it also "freezes up" when i try to runa a scan or do a disk cleanup. any help or advice would be greatly appricated. thanks