I tried the free trial of Internet Security Complete 2012. Uninstalled. Tried the free AV and it still hogged resources and installed Geek buddy and Comodo Dragon and didn't even give me the option not too.
AFAIK I haven't got any infections (at least according to AVG, Avast and Avira in the past) and in the 2 1/2 hours it took Comodo to search 2% of my computer it didn't find anything either so there should have been no reason for it to hog all the CPU all the time but it did. After uninstalling it all yesterday I've switched my computer on today and it's installing itself again!!!!!