Just had a plaintive call from little sister, her computer appears to be grinding to a halt. Shes been using the internet with no protection (so to speak) for ages now and has undoutably been installing all sorts of rubbish. Any suggestions on software that she can use to clean up and protect in the future, free stuff as shes unwilling to pay for anything (empoverished student). I've pointed her in the direction of adaware and spybot for starters, plus going through the proper route to unistall any superflous stuff. Its very unlikely shes changed any core settings like swapfile sizes. Is there any decent free antivirus/firewall software available? Any other low tech suggestionss gratefully recieved?