I got hit with one of those redirctors TWICE last week. Combofix was the only way I could get rid of it. I don’t do “porn sites” and “free music download” sites. I’ve got a suspicion that I was picking it up at a popular news site. I’m not mentioning any names but I stopped visiting that site. So far, so good. I’ve used Combofix twice and am keeping it handy. Those redirectors are a real PITA.
And the worst thing is that other lesser measures to clear up the problem only work for about a day. If they didn’t work immediately it would have been more desirable as you could remember what measures you tried earlier. Ones I tried was to add those URLs I was redirected to by the junkware as Restricted Sites in the Security tab under Internet Options. I then tried adding those sites to a host file which worked for good but it was only about 60% effective.