I've been a NOD32 user for several years now and always loved the way it runs so smoothly, doesn't slow down my machine, never has had a conflict with other software - BUT today I tried a little test as I've noticed lately that although NOD32 has notified me of the odd threat, I haven't been able to actually delete the file that is causing the problem. I downloaded a copy of Roboform by P2P - expecting it to be infected. Downloaded and extracted to my hard disk. No warnings from NOD32, despite there clearly being a crack included. I know that not all cracks are viruses, but the majority are malware of some kind. Checked the same file with KIS6 and it notified me that the crack, a .dll file, was a backdoor trojan. It may have been a false positive, sure, but having a possible backdoor trojan with an application that is supposed to encrypt passwords and private information and not being alerted by NOD32 made me feel unsettled. The information KIS6 alerted me about the .dll file took me to the Kaspersky web site where it displayed that several other AV programs had also detected this file as a backdoor trojan (Dr Web, Avira and one other - but no NOD32). Now I'd NEVER use a crack, warez, or any other 'dodgy' software on my machine, but the fact remains that NOD32 didn't pick it up. Sure, no AV has a 100% detection rate, but KIS6 also picked up two other files in a customization pack that NOD32 didn't - again, perhaps false-positives, but at least KIS6 made me think twice about installing the file (I chose not to, naturally). Of course I was never going to install a warez version of Roboform - this was purely a test - but I am unsettled that I got no warning from NOD32. Am I overreacting? Am I right to be unsettled by NOD32 missing what appears to be, by several other AVs, a very probable backdoor trojan? I am now tempted to install KIS6 - something I have never considered before until now. I feel that picking up three threats, from an AV that isn't exactly known to give false positives, have been missed by what I had considered to be the best AV there is. Oh, and I had my NOD32 set up to Blackspear's settings for advanced protection - everything on 'full', as it were, yet KIS6 I hadn't even started to tweak yet - I just scanned on the default settings. After years of happiness, I am, all of a sudden, in doubt about my beloved NOD32.