false-positive

I've seen it happen reasonably often: I write an application in Delphi and when I compile it, the virus-scanner tells me that I've created a virus and then immediately deletes the executable again. It's annoying but reasonable easy to fix by doing a full rebuild, deleting the *.dcu files first and sometimes by simply waiting. It happens with Delphi 6, 7, 2005 and 2007, as far as I know. And Symantec, Kaspersky, McAfee and NOD32 have all been guilty of reporting these false positives. I know it's because Delphi adds timestamps to its DCU files and these timestamps end up in the final executable

I have an installer for my C# program, I uploaded it to my website, but whenever I try to download it in chrome or IE, I get " MY FILE* is not commonly downloaded and could be dangerous." You can only keep it if you click a tiny arrow and choose "Keep" from a menu. Only a tenth of less of users will be able to get my program. How could I work around this? I have heard about digital code signing, but at hundreds of dollars a year. This is really not an option for me. Would making an MSI installer or putting it on a software website help? The best resources are this blog post and this blog post

I just ran into an annoying problem. Suddenly Avira AntiVir started to flag one executable from my software as being a virus. As the default action from almost any user is to click OK and Avira suggests to put the virus in quarantine, most of my users are deleting this executable. Well, let's not be arrogant and check if I'm not infected indeed. I posted the file to http://www.virustotal.com and from all anti virus only Avira flags it as infected. Furthermore I scanned my computer with two different anti viruses and it is clean. I already posted a mail to my users explaining what is happening