a good pop up/ad blocker. I have a new lap top - I never really had too much of a problem on my old one so there was obviously something installed. I'm always so wary of downloading anything as just about everything seems to slow things down. I'm on Windows 8 and finding it so hard to navigate around things - don't like it at all ............my old lappy was a much cheaper model but far niftier than this new one.
Wish I was a bit more savvy on these things