I was updating McAfee antivirus and firewall when I noticed that the Firewall has been disabled!! And I can't enable it because of some error. So I decided to reboot, then it said something about waiting for some program named MCI to end. I stopped it and rebooted. Tried to reinstall McAfee interent security but it didn't work, it had all kinds of errors. I seriously think I had a worm/trojan that got into my computer somehow. Any ideas?