A .htm file is also used by your browser when you save a bookmark or favorite url.

But, what you may be doing is copying and pasting url addresses into notepad and saving the resulting file? Is that what is happening? That would change the location avast! would expect to find this file, and this could be an unexpected location for avast to find it in when you do your daily manual scan. Depending on the specific vps database run at that specific time, it may or may not flag these files because of that.

Or you may have your a/v program set to the highest scanning parameters possible. If so, suggest you set your settings back to default. Issues you see may be because avast! sensitivity is too high.



About running daily scans:

A once a week quick scan is enough. Once a month full scan is sufficient. Real-time shields that run full-time provide all the protection needed, so running manual scans really are not needed, as real-time scanning has already covered it. The only exception to this is to always scan any new files or programs downloaded before they are opened or run, and any suspicious ones are thrown away.

[EDIT:] A general list of executable file extensions here: http://pcsupport.about.com/od/tipstricks/a/execfileext.htm You’ll note that .js is one of them.