Looks like it’s the same version every time.

It’s not doing that for everyone. I had one - 20131224 - that ran once and hasn’t returned since the reboot.

I suggest that perhaps something’s gone wrong on your particular system. As with so many other users lately, myself included, perhaps an uninstall, clean up (with Avastclear), and fresh reinstall will help clear that up.

Avastclear : http://files.avast.com/iavs9x/avastclear.exe

-Noel