ok, People, I guess I have an apology to make.
It would seem that I'm exactly as dumb as I thought I was in my first post. I've been getting this popup for a while now.. and I've ALWAYS seen it as Avast, however it would seem that I've been under some kind of delusion, as I now find that I am completely wrong.
The popup does in fact belong to comodo.. why I've suffered this delusion for so long, I have no idea.
All that's left really, is to apologise for littering the the forum with a donut post... and vow ^^ to ask only for your help when I actually get some trouble from Avast and not a differenent program entirely.
*creeps towards the door with a big red face*