Hello, Sorry if it thread exist but I can't found that. I think that NOD is the best AV, I like eset stuff but I'm not agree with some of NOD and ESET: We know that AMON doesn't scan packed file. I also know that if for example a Bagle variant appear and later appear the same variant compressed with UPX AMON will detect this, because it's spreading and ESET made a special detection, for example: Win32/X.A:UPX. But it isn't the matter. The problem: AMON detect only specific packed sample (ITW). I've many backdoors, trojans and viruses that first appear uncompressed so NOD detect it, but later appeared the same malware packed with ASPACK, UPX, etc. And only NOD32 Scanner and IMON detect it. Not AMON, because AMON doesn't scan packed files. I know that check compressed file like .zip isn't necessary because it will damage you only if you decomprees them, but the packed files are auto-extract, so you only need execute them and you will get infected. I've a spammer that NOD detect, so I've packed it with UPX and execute them and nothing, the spammer has been executed and no alert or access deny from AMON. Only IMON and the Scanner detect them as UPX file infected... I also know that ESET said that's can slowdown the PC and the use resources, but Why ESET doesn't add the ability to scan packed files as a undefault option in AMON, so the user can decide if enable it or not as KAV and NAV do? I was a user of KAV 4.5 and I has enabled the scan for packed files and I've not feel slowdown for this and my PC is standar. Thanks for your comprehension!