I keep getting Avast telling me malicious software detected with the message URL:MAL. Every time I am trying to browse even when I looked at this site. in Chrome I always get pop ups and ads and it's beginning to be really annoying. I haven't been looking at anything dodgy just normal browsing like the weather, banking etc.
It's not as bad in Firefox, although still happens, but I do prefer to use chrome.
I've run Avast virus scan several times, I've also tried spybot (didn't detect anything), crap cleaner, Malware bytes, Ad adaware and Hitman Pro. Although some trojans were detected in some of the programmes, it hasn't helped the problem.
I've tried to add Simple Ads extension from the chrome store but each time I get "an error has occurred, network failed".