" ... There is no 5.1.677 available for download - it's just an incorrectly labeled package ... "
But this "incorrectly labeled package" installs version 5.0.677 and the setup file is 2 MB bigger:
setup_av_free_eng.exe v5.0.677.0 (41,6 MB)
setup_av_free_eng.exe v5.1.677.0 (43,7 MB)
So what this "versions" mess and these extra 2 MB are supposed to mean? That the "new" version 5.1.677.0 has some hidden features avast developers are not so willing to tell the audience or it is an inadvertent mistake and the "new" version continues to stay available for download for about four weeks already ? No explanation.
Thanks.