I've been using the NOD32 trial for couple of weeks and I had the trojandownloader.zlob.bfl installed on my computer a few days ago. NOD32 didn't detect it until I did a routine backup to an external drive. It also showed up with the "in-depth analysis" scan. I'm wondering if it was just one that will get through sometimes or if the default settings aren't tight enough. I deleted the trojan manually and there are no symptoms of infestation. I tried the Spysweeper free scan and it only found harmless cookies and I installed Counterspy and scanned and it found a few cookies and a keylogger, SC-Keylog in a desktop icon. I think I will use both NOD32 and Counterspy along with the Comodo firewall. I previously used Zonelabs Antivirus and seemed well protected with no infestations I was aware of but it seemed to slow my system more with each software update and my computer was taking a long time to boot up. System Standby was no longer working properly and it interfered with an IE7 installation, really screwing things up.