Lee: I have the Avast 4.5.459 home version also and my interface looks nothing like what you posted above, and I do not (appear to) have any options or selections to invoke that screen... It simply says "simple user interface"

Ahh, sorry about that keywester, i didn,t really make myself clear i suppose, to open up that windows you need to double left click the “A” button in your taskbar next to your system clock. (see below)
Also before you try disabling the provider, try sliding the bar from high to normal, this may help.

–lee