I've got a peculiar piece of Malware running on my box now. It hijacks the links on a Google search and sends you to a random place, usual a commercial seach engine but never the same place twice.

It affects IE 8, FF 3.5 and Opera 10. It does not affect Chrome. Running an Avast boot scan shows no malware. Spybot and Ad aware with the latest editions find nothing. For grins i downloaded and ran MS malware detection and removal tool and it found nothing as well.

So far this only affects search results, it doesn't hijack manual entries or bookmarks.

Any ideas of where to take this next?

many thanks