Version 4.0 has been a total and utter disaster on my system, I might as well install Antivirus 2009. So my question is: What do I loose in terms of Real Time and Scan detection capability if I go back to 2.7, since it's the only version that is worth using in my current setup. Will the detection, heuristics stay the same? I don't care about cleanup capability, if I get infected then the AntiVirus has already Failed to protect me, and I will not trust that antivirus to clean up any infection from the system, in my book that system has now became compromised and requires a re-image. So mainly, if I don't care about cleanup capability and self defense (self defense won't do crap if the virus already infiltrated your system, the AV should stop the infection before Self Defense kicks in, if the infection is allowed to access the system up to the point that it kills the AV then the system is compromised), then will 2.7 afford the same detection capability and same Advanced Heuristic Capability as 4.0? Are the AH, and Antispyware modules also updated in 2.7 as they are updated in 4.0? Or does 4.0 gets the update and 2.7 lags back? Thanks, And for god sake please fix 4.0...basically you should have focused on 3.0 and maybe releasing 3.5. Just became every other AntiVirus Company releases new version each year does not mean that ESET has to. Next time, polish up 3.0 and listen to the beta testers before rushing a new version to get the marketing bliss, since in the end you might alienate more FAITHFUL customers with that method then you will actually gain. 2.0 stayed in 2.x flavour for 3+ years.